Migrate to flake8
Fixes bug 117244 Change-Id: Ide81366eb2240377160775830e2307aef6064f9e
This commit is contained in:
Monty Taylor
parent
8102ccbff0
commit
1d79afc696
@ -48,8 +48,8 @@ function run_tests {
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}
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function run_pep8 {
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echo "Running PEP8 and HACKING compliance check..."
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bash -c "${wrapper} tools/run_pep8.sh"
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echo "Running flake8..."
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bash -c "${wrapper} flake8"
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}
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# run unit tests with pep8 when no arguments are specified
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622
tools/hacking.py
622
tools/hacking.py
@ -1,622 +0,0 @@
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#!/usr/bin/env python
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# vim: tabstop=4 shiftwidth=4 softtabstop=4
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# Copyright (c) 2012, Cloudscaling
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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"""heat HACKING file compliance testing
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Built on top of pep8.py
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"""
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import imp
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import inspect
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import logging
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import os
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import re
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import subprocess
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import sys
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import tokenize
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import pep8
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# Don't need this for testing
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logging.disable('LOG')
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#N1xx comments
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#N2xx except
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#N3xx imports
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#N4xx docstrings
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#N5xx dictionaries/lists
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#N6xx calling methods
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#N7xx localization
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#N8xx git commit messages
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#N9xx other
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IMPORT_EXCEPTIONS = ['sqlalchemy', 'migrate', 'heat.db.sqlalchemy.session',
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'heat.db.sqlalchemy.migration.versioning_api']
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# Paste is missing a __init__ in top level directory
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START_DOCSTRING_TRIPLE = ['u"""', 'r"""', '"""', "u'''", "r'''", "'''"]
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END_DOCSTRING_TRIPLE = ['"""', "'''"]
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VERBOSE_MISSING_IMPORT = os.getenv('HACKING_VERBOSE_MISSING_IMPORT', 'False')
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_missingImport = set([])
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# Monkey patch broken excluded filter in pep8
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# See https://github.com/jcrocholl/pep8/pull/111
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def excluded(self, filename):
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"""Check if options.exclude contains a pattern that matches filename."""
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basename = os.path.basename(filename)
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return any((pep8.filename_match(filename, self.options.exclude,
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default=False),
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pep8.filename_match(basename, self.options.exclude,
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default=False)))
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def input_dir(self, dirname):
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"""Check all files in this directory and all subdirectories."""
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dirname = dirname.rstrip('/')
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if self.excluded(dirname):
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return 0
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counters = self.options.report.counters
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verbose = self.options.verbose
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filepatterns = self.options.filename
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runner = self.runner
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for root, dirs, files in os.walk(dirname):
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if verbose:
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print('directory ' + root)
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counters['directories'] += 1
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for subdir in sorted(dirs):
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if self.excluded(os.path.join(root, subdir)):
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dirs.remove(subdir)
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for filename in sorted(files):
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# contain a pattern that matches?
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if ((pep8.filename_match(filename, filepatterns) and
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not self.excluded(filename))):
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runner(os.path.join(root, filename))
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def is_import_exception(mod):
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return (mod in IMPORT_EXCEPTIONS or
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any(mod.startswith(m + '.') for m in IMPORT_EXCEPTIONS))
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def import_normalize(line):
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# convert "from x import y" to "import x.y"
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# handle "from x import y as z" to "import x.y as z"
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split_line = line.split()
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if ("import" in line and line.startswith("from ") and "," not in line and
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split_line[2] == "import" and split_line[3] != "*" and
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split_line[1] != "__future__" and
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(len(split_line) == 4 or
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(len(split_line) == 6 and split_line[4] == "as"))):
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return "import %s.%s" % (split_line[1], split_line[3])
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else:
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return line
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def nova_todo_format(physical_line, tokens):
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"""Check for 'TODO()'.
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nova HACKING guide recommendation for TODO:
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Include your name with TODOs as in "#TODO(termie)"
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Okay: #TODO(sdague)
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N101: #TODO fail
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N101: #TODO (jogo) fail
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"""
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# TODO(sdague): TODO check shouldn't fail inside of space
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pos = physical_line.find('TODO')
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pos1 = physical_line.find('TODO(')
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pos2 = physical_line.find('#') # make sure it's a comment
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if (pos != pos1 and pos2 >= 0 and pos2 < pos and len(tokens) == 0):
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return pos, "N101: Use TODO(NAME)"
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def nova_except_format(logical_line):
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r"""Check for 'except:'.
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nova HACKING guide recommends not using except:
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Do not write "except:", use "except Exception:" at the very least
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Okay: except Exception:
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N201: except:
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"""
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if logical_line.startswith("except:"):
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yield 6, "N201: no 'except:' at least use 'except Exception:'"
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def nova_except_format_assert(logical_line):
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r"""Check for 'assertRaises(Exception'.
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nova HACKING guide recommends not using assertRaises(Exception...):
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Do not use overly broad Exception type
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Okay: self.assertRaises(NovaException)
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N202: self.assertRaises(Exception)
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"""
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if logical_line.startswith("self.assertRaises(Exception"):
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yield 1, "N202: assertRaises Exception too broad"
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modules_cache = dict((mod, True) for mod in tuple(sys.modules.keys())
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+ sys.builtin_module_names)
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RE_RELATIVE_IMPORT = re.compile('^from\s*[.]')
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def nova_import_rules(logical_line):
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r"""Check for imports.
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nova HACKING guide recommends one import per line:
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Do not import more than one module per line
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Examples:
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Okay: from heat.rpc import api
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N301: from heat.rpc import api, client
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Imports should usually be on separate lines.
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nova HACKING guide recommends importing only modules:
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Do not import objects, only modules
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Examples:
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Okay: from os import path
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Okay: from os import path as p
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Okay: from os import (path as p)
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Okay: import os.path
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Okay: from heat.engine import api
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N302: from os.path import dirname as dirname2
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N302: from os.path import (dirname as dirname2)
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N303: from os.path import *
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N304: from .compute import rpcapi
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"""
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#NOTE(afazekas): An old style relative import example will not be able to
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# pass the doctest, since the relativity depends on the file's locality
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def is_module_for_sure(mod, search_path=sys.path):
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mod = mod.replace('(', '') # Ignore parentheses
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try:
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mod_name = mod
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while '.' in mod_name:
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pack_name, _sep, mod_name = mod.partition('.')
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f, p, d = imp.find_module(pack_name, search_path)
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search_path = [p]
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imp.find_module(mod_name, search_path)
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except ImportError:
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try:
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# NOTE(vish): handle namespace modules
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module = __import__(mod)
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except ImportError as exc:
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# NOTE(vish): the import error might be due
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# to a missing dependency
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missing = str(exc).split()[-1]
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if (missing != mod.split('.')[-1] or
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"cannot import" in str(exc)):
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_missingImport.add(missing)
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return True
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return False
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return True
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def is_module(mod):
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"""Checks for non module imports."""
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if mod in modules_cache:
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return modules_cache[mod]
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res = is_module_for_sure(mod)
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modules_cache[mod] = res
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return res
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current_path = os.path.dirname(pep8.current_file)
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current_mod = os.path.basename(pep8.current_file)
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if current_mod[-3:] == ".py":
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current_mod = current_mod[:-3]
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split_line = logical_line.split()
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split_line_len = len(split_line)
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if (split_line[0] in ('import', 'from') and split_line_len > 1 and
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not is_import_exception(split_line[1])):
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pos = logical_line.find(',')
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if pos != -1:
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if split_line[0] == 'from':
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yield pos, "N301: one import per line"
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return # ',' is not supported by the N302 checker yet
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pos = logical_line.find('*')
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if pos != -1:
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yield pos, "N303: No wildcard (*) import."
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return
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if split_line_len in (2, 4, 6) and split_line[1] != "__future__":
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if 'from' == split_line[0] and split_line_len > 3:
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mod = '.'.join((split_line[1], split_line[3]))
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if is_import_exception(mod):
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return
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if RE_RELATIVE_IMPORT.search(logical_line):
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yield logical_line.find('.'), ("N304: No "
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"relative imports. '%s' is a relative import"
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% logical_line)
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return
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if not is_module(mod):
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yield 0, ("N302: import only modules."
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"'%s' does not import a module" % logical_line)
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return
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#NOTE(afazekas): import searches first in the package
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# The import keyword just imports modules
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# The guestfs module now imports guestfs
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mod = split_line[1]
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if (current_mod != mod and
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not is_module(mod) and
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is_module_for_sure(mod, [current_path])):
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yield 0, ("N304: No relative imports."
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" '%s' is a relative import"
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% logical_line)
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#TODO(jogo): import template: N305
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def nova_import_alphabetical(logical_line, blank_lines, previous_logical,
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indent_level, previous_indent_level):
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r"""Check for imports in alphabetical order.
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nova HACKING guide recommendation for imports:
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imports in human alphabetical order
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Okay: import os\nimport sys\n\nimport heat\nfrom heat import rpc
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N306: import sys\nimport os
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"""
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# handle import x
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# use .lower since capitalization shouldn't dictate order
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split_line = import_normalize(logical_line.strip()).lower().split()
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split_previous = import_normalize(previous_logical.strip()).lower().split()
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if blank_lines < 1 and indent_level == previous_indent_level:
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length = [2, 4]
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if (len(split_line) in length and len(split_previous) in length and
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split_line[0] == "import" and split_previous[0] == "import"):
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if split_line[1] < split_previous[1]:
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yield (0, "N306: imports not in alphabetical order (%s, %s)"
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% (split_previous[1], split_line[1]))
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def in_docstring_position(previous_logical):
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return (previous_logical.startswith("def ") or
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previous_logical.startswith("class "))
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def nova_docstring_start_space(physical_line, previous_logical):
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r"""Check for docstring not start with space.
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nova HACKING guide recommendation for docstring:
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Docstring should not start with space
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Okay: def foo():\n '''This is good.'''
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N401: def foo():\n ''' This is not.'''
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"""
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# short circuit so that we don't fail on our own fail test
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# when running under external pep8
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if physical_line.find("N401: def foo()") != -1:
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return
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# it's important that we determine this is actually a docstring,
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# and not a doc block used somewhere after the first line of a
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# function def
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if in_docstring_position(previous_logical):
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pos = max([physical_line.find(i) for i in START_DOCSTRING_TRIPLE])
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if pos != -1 and len(physical_line) > pos + 4:
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if physical_line[pos + 3] == ' ':
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return (pos, "N401: docstring should not start with"
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" a space")
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def nova_docstring_one_line(physical_line):
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r"""Check one line docstring end.
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nova HACKING guide recommendation for one line docstring:
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A one line docstring looks like this and ends in punctuation.
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Okay: '''This is good.'''
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Okay: '''This is good too!'''
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Okay: '''How about this?'''
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N402: '''This is not'''
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N402: '''Bad punctuation,'''
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"""
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#TODO(jogo) make this apply to multi line docstrings as well
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line = physical_line.lstrip()
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if line.startswith('"') or line.startswith("'"):
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pos = max([line.find(i) for i in START_DOCSTRING_TRIPLE]) # start
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end = max([line[-4:-1] == i for i in END_DOCSTRING_TRIPLE]) # end
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if pos != -1 and end and len(line) > pos + 4:
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if line[-5] not in ['.', '?', '!']:
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return pos, "N402: one line docstring needs punctuation."
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def nova_docstring_multiline_end(physical_line, previous_logical):
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r"""Check multi line docstring end.
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nova HACKING guide recommendation for docstring:
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Docstring should end on a new line
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Okay: '''foobar\nfoo\nbar\n'''
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N403: def foo():\n'''foobar\nfoo\nbar\n d'''\n\n
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"""
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if in_docstring_position(previous_logical):
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pos = max(physical_line.find(i) for i in END_DOCSTRING_TRIPLE)
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if pos != -1 and len(physical_line) == pos + 4:
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if physical_line.strip() not in START_DOCSTRING_TRIPLE:
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return (pos, "N403: multi line docstring end on new line")
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def nova_docstring_multiline_start(physical_line, previous_logical, tokens):
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r"""Check multi line docstring start with summary.
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nova HACKING guide recommendation for docstring:
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Docstring should start with A multi line docstring has a one-line summary
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Okay: '''foobar\nfoo\nbar\n'''
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N404: def foo():\n'''\nfoo\nbar\n''' \n\n
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"""
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if in_docstring_position(previous_logical):
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pos = max([physical_line.find(i) for i in START_DOCSTRING_TRIPLE])
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# start of docstring when len(tokens)==0
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if len(tokens) == 0 and pos != -1 and len(physical_line) == pos + 4:
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if physical_line.strip() in START_DOCSTRING_TRIPLE:
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return (pos, "N404: multi line docstring "
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"should start with a summary")
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def nova_no_cr(physical_line):
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r"""Check that we only use newlines not cariage returns.
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Okay: import os\nimport sys
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# pep8 doesn't yet replace \r in strings, will work on an
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# upstream fix
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N901 import os\r\nimport sys
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"""
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pos = physical_line.find('\r')
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if pos != -1 and pos == (len(physical_line) - 2):
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return (pos, "N901: Windows style line endings not allowed in code")
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FORMAT_RE = re.compile("%(?:"
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"%|" # Ignore plain percents
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"(\(\w+\))?" # mapping key
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"([#0 +-]?" # flag
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"(?:\d+|\*)?" # width
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"(?:\.\d+)?" # precision
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"[hlL]?" # length mod
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"\w))") # type
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class LocalizationError(Exception):
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pass
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def check_i18n():
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"""Generator that checks token stream for localization errors.
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Expects tokens to be ``send``ed one by one.
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Raises LocalizationError if some error is found.
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"""
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while True:
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try:
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token_type, text, _, _, line = yield
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except GeneratorExit:
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return
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if (token_type == tokenize.NAME and text == "_" and
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not line.startswith('def _(msg):')):
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while True:
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token_type, text, start, _, _ = yield
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if token_type != tokenize.NL:
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break
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if token_type != tokenize.OP or text != "(":
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continue # not a localization call
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format_string = ''
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while True:
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token_type, text, start, _, _ = yield
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if token_type == tokenize.STRING:
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format_string += eval(text)
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elif token_type == tokenize.NL:
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pass
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else:
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break
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if not format_string:
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raise LocalizationError(start,
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"N701: Empty localization string")
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if token_type != tokenize.OP:
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raise LocalizationError(start,
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"N701: Invalid localization call")
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if text != ")":
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if text == "%":
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raise LocalizationError(start,
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"N702: Formatting operation should be outside"
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" of localization method call")
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elif text == "+":
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raise LocalizationError(start,
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"N702: Use bare string concatenation instead"
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" of +")
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else:
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raise LocalizationError(start,
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"N702: Argument to _ must be just a string")
|
||||
|
||||
format_specs = FORMAT_RE.findall(format_string)
|
||||
positional_specs = [(key, spec) for key, spec in format_specs
|
||||
if not key and spec]
|
||||
# not spec means %%, key means %(smth)s
|
||||
if len(positional_specs) > 1:
|
||||
raise LocalizationError(start,
|
||||
"N703: Multiple positional placeholders")
|
||||
|
||||
|
||||
def nova_localization_strings(logical_line, tokens):
|
||||
r"""Check localization in line.
|
||||
|
||||
Okay: _("This is fine")
|
||||
Okay: _("This is also fine %s")
|
||||
N701: _('')
|
||||
N702: _("Bob" + " foo")
|
||||
N702: _("Bob %s" % foo)
|
||||
# N703 check is not quite right, disabled by removing colon
|
||||
N703 _("%s %s" % (foo, bar))
|
||||
"""
|
||||
# TODO(sdague) actually get these tests working
|
||||
gen = check_i18n()
|
||||
next(gen)
|
||||
try:
|
||||
map(gen.send, tokens)
|
||||
gen.close()
|
||||
except LocalizationError as e:
|
||||
yield e.args
|
||||
|
||||
#TODO(jogo) Dict and list objects
|
||||
|
||||
|
||||
def nova_is_not(logical_line):
|
||||
r"""Check localization in line.
|
||||
|
||||
Okay: if x is not y
|
||||
N901: if not X is Y
|
||||
N901: if not X.B is Y
|
||||
"""
|
||||
split_line = logical_line.split()
|
||||
if (len(split_line) == 5 and split_line[0] == 'if' and
|
||||
split_line[1] == 'not' and split_line[3] == 'is'):
|
||||
yield (logical_line.find('not'), "N901: Use the 'is not' "
|
||||
"operator for when testing for unequal identities")
|
||||
|
||||
|
||||
def nova_not_in(logical_line):
|
||||
r"""Check localization in line.
|
||||
|
||||
Okay: if x not in y
|
||||
Okay: if not (X in Y or X is Z)
|
||||
Okay: if not (X in Y)
|
||||
N902: if not X in Y
|
||||
N902: if not X.B in Y
|
||||
"""
|
||||
split_line = logical_line.split()
|
||||
if (len(split_line) == 5 and split_line[0] == 'if' and
|
||||
split_line[1] == 'not' and split_line[3] == 'in' and not
|
||||
split_line[2].startswith('(')):
|
||||
yield (logical_line.find('not'), "N902: Use the 'not in' "
|
||||
"operator for collection membership evaluation")
|
||||
|
||||
current_file = ""
|
||||
|
||||
|
||||
def readlines(filename):
|
||||
"""Record the current file being tested."""
|
||||
pep8.current_file = filename
|
||||
return open(filename).readlines()
|
||||
|
||||
|
||||
def add_nova():
|
||||
"""Monkey patch in nova guidelines.
|
||||
|
||||
Look for functions that start with nova_ and have arguments
|
||||
and add them to pep8 module
|
||||
Assumes you know how to write pep8.py checks
|
||||
"""
|
||||
for name, function in globals().items():
|
||||
if not inspect.isfunction(function):
|
||||
continue
|
||||
args = inspect.getargspec(function)[0]
|
||||
if args and name.startswith("nova"):
|
||||
exec("pep8.%s = %s" % (name, name))
|
||||
|
||||
|
||||
def once_git_check_commit_title():
|
||||
"""Check git commit messages.
|
||||
|
||||
nova HACKING recommends not referencing a bug or blueprint in first line,
|
||||
it should provide an accurate description of the change
|
||||
N801
|
||||
N802 Title limited to 72 chars
|
||||
"""
|
||||
#Get title of most recent commit
|
||||
|
||||
subp = subprocess.Popen(['git', 'log', '--no-merges', '--pretty=%s', '-1'],
|
||||
stdout=subprocess.PIPE)
|
||||
title = subp.communicate()[0]
|
||||
if subp.returncode:
|
||||
raise Exception("git log failed with code %s" % subp.returncode)
|
||||
|
||||
#From https://github.com/openstack/openstack-ci-puppet
|
||||
# /blob/master/modules/gerrit/manifests/init.pp#L74
|
||||
#Changeid|bug|blueprint
|
||||
git_keywords = (r'(I[0-9a-f]{8,40})|'
|
||||
'([Bb]ug|[Ll][Pp])[\s\#:]*(\d+)|'
|
||||
'([Bb]lue[Pp]rint|[Bb][Pp])[\s\#:]*([A-Za-z0-9\\-]+)')
|
||||
GIT_REGEX = re.compile(git_keywords)
|
||||
|
||||
error = False
|
||||
#NOTE(jogo) if match regex but over 3 words, acceptable title
|
||||
if GIT_REGEX.search(title) is not None and len(title.split()) <= 3:
|
||||
print ("N801: git commit title ('%s') should provide an accurate "
|
||||
"description of the change, not just a reference to a bug "
|
||||
"or blueprint" % title.strip())
|
||||
error = True
|
||||
if len(title.decode('utf-8')) > 72:
|
||||
print ("N802: git commit title ('%s') should be under 72 chars"
|
||||
% title.strip())
|
||||
error = True
|
||||
return error
|
||||
|
||||
imports_on_separate_lines_N301_compliant = r"""
|
||||
Imports should usually be on separate lines.
|
||||
|
||||
Okay: import os\nimport sys
|
||||
E401: import sys, os
|
||||
|
||||
N301: from subprocess import Popen, PIPE
|
||||
Okay: from myclass import MyClass
|
||||
Okay: from foo.bar.yourclass import YourClass
|
||||
Okay: import myclass
|
||||
Okay: import foo.bar.yourclass
|
||||
"""
|
||||
|
||||
if __name__ == "__main__":
|
||||
#include nova path
|
||||
sys.path.append(os.getcwd())
|
||||
#Run once tests (not per line)
|
||||
once_error = once_git_check_commit_title()
|
||||
#NOVA error codes start with an N
|
||||
pep8.SELFTEST_REGEX = re.compile(r'(Okay|[EWN]\d{3}):\s(.*)')
|
||||
pep8.ERRORCODE_REGEX = re.compile(r'[EWN]\d{3}')
|
||||
add_nova()
|
||||
pep8.current_file = current_file
|
||||
pep8.readlines = readlines
|
||||
pep8.StyleGuide.excluded = excluded
|
||||
pep8.StyleGuide.input_dir = input_dir
|
||||
# we need to kill this doctring otherwise the self tests fail
|
||||
pep8.imports_on_separate_lines.__doc__ = \
|
||||
imports_on_separate_lines_N301_compliant
|
||||
|
||||
try:
|
||||
pep8._main()
|
||||
sys.exit(once_error)
|
||||
finally:
|
||||
if len(_missingImport) > 0:
|
||||
print >> sys.stderr, ("%i imports missing in this test environment"
|
||||
% len(_missingImport))
|
||||
@ -1,17 +0,0 @@
|
||||
#!/bin/bash
|
||||
|
||||
set -e
|
||||
|
||||
# Until all these issues get fixed, ignore.
|
||||
PEP8='python tools/hacking.py --ignore=N101,N201,N202,N301,N302,N303,N304,N305,N306,N401,N402,N403,N404,N702,N703,N801,N902'
|
||||
|
||||
EXCLUDE='--exclude=.venv,.git,.tox,dist,doc,*lib/python*'
|
||||
EXCLUDE+=',*egg,build,*tools*'
|
||||
|
||||
# Check all .py files
|
||||
${PEP8} ${EXCLUDE} .
|
||||
|
||||
# Check binaries without py extension
|
||||
${PEP8} bin/heat-api bin/heat-api-cfn bin/heat-api-cloudwatch bin/heat-cfn bin/heat-engine bin/heat-watch
|
||||
|
||||
! pyflakes heat/ | grep "imported but unused\|redefinition of function"
|
||||
@ -1,13 +1,17 @@
|
||||
# this file lists dependencies required for the testing of heat
|
||||
distribute>=0.6.24
|
||||
|
||||
# Install bounded pep8/pyflakes first, then let flake8 install
|
||||
pep8==1.4.5
|
||||
pyflakes==0.7.2
|
||||
flake8==2.0
|
||||
hacking>=0.5.3,<0.6
|
||||
|
||||
coverage
|
||||
discover
|
||||
mox==0.5.3
|
||||
testrepository>=0.0.13
|
||||
paramiko
|
||||
pep8==1.3.4
|
||||
pyflakes
|
||||
python-glanceclient
|
||||
sphinx>=1.1.2
|
||||
Babel
|
||||
|
||||
8
tox.ini
8
tox.ini
@ -10,7 +10,7 @@ commands =
|
||||
python setup.py testr --slowest --testr-args='{posargs}'
|
||||
|
||||
[testenv:pep8]
|
||||
commands = bash tools/run_pep8.sh
|
||||
commands = flake8 heat bin/heat-api bin/heat-api-cfn bin/heat-api-cloudwatch bin/heat-cfn bin/heat-engine bin/heat-watch
|
||||
|
||||
[testenv:venv]
|
||||
commands = {posargs}
|
||||
@ -20,3 +20,9 @@ setenv = VIRTUAL_ENV={envdir}
|
||||
commands =
|
||||
python tools/patch_tox_venv.py
|
||||
python setup.py testr --coverage
|
||||
|
||||
[flake8]
|
||||
show-source = true
|
||||
ignore = H,F403,F841
|
||||
builtins = _
|
||||
exclude=.venv,.git,.tox,dist,doc,*openstack/common*,*lib/python*,*egg,tools
|
||||
|
||||
Loading…
Reference in New Issue
Block a user