Configure pylint and update the code

This will allow us to run automatic checks for future commits.

Change-Id: Idbf08a44df0a940de51fb418d99f90da19fa6dc3

anvil/actions/restart.py

@@ -15,18 +15,14 @@
 #    under the License.
 
 from anvil import action
-from anvil import colorizer
-from anvil import log
 from anvil.actions import start
 from anvil.actions import stop
 
-from anvil.action import PhaseFunctors
-
-LOG = log.getLogger(__name__)
-
 
 class RestartAction(action.Action):
+
     def __init__(self, name, distro, root_dir, cli_opts):
+        super(RestartAction, self).__init__(name, distro, root_dir, cli_opts)
         self.start = start.StartAction(name, distro, root_dir, cli_opts.copy())
         self.stop = stop.StopAction(name, distro, root_dir, cli_opts.copy())
 

anvil/components/horizon.py

@@ -14,18 +14,12 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from anvil import colorizer
 from anvil import components as comp
-from anvil import downloader as down
 from anvil import exceptions as excp
 from anvil import log as logging
 from anvil import shell as sh
 from anvil import utils
 
-from anvil.packaging import yum
-
-from tempfile import NamedTemporaryFile
-
 import binascii
 import os
 import re

anvil/decorators.py

@@ -21,7 +21,7 @@ import functools
 
 
 # http://wiki.python.org/moin/PythonDecoratorLibrary#Memoize
-class memoized(object):
+class memoized(object):  # pylint: disable=C0103
     '''Decorator. Caches a function's return value each time it is called.
     If called later with the same arguments, the cached value is returned
     (not reevaluated).

anvil/distro.py

@@ -32,7 +32,8 @@ from anvil import shell as sh
 
 LOG = logging.getLogger(__name__)
 
-Component = collections.namedtuple("Component", 'entry_point,options,siblings')
+Component = collections.namedtuple(  # pylint: disable=C0103
+    "Component", 'entry_point,options,siblings')
 
 
 class Distro(object):

anvil/distros/rhel.py

@@ -83,11 +83,11 @@ class HorizonInstaller(horizon.HorizonInstaller):
             # Directives in the configuration files are case-insensitive,
             # but arguments to directives are often case sensitive...
             # NOTE(harlowja): we aren't handling multi-line fixups...
-            if re.match("^\s*User\s+(.*)$", line, re.I):
+            if re.match(r"^\s*User\s+(.*)$", line, re.I):
                 line = "User %s" % (user)
-            if re.match("^\s*Group\s+(.*)$", line, re.I):
+            if re.match(r"^\s*Group\s+(.*)$", line, re.I):
                 line = "Group %s" % (group)
-            if re.match("^\s*Listen\s+(.*)$", line, re.I):
+            if re.match(r"^\s*Listen\s+(.*)$", line, re.I):
                 line = "Listen 0.0.0.0:80"
             new_lines.append(line)
         with sh.Rooted(True):

anvil/log.py

@@ -17,6 +17,8 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+# pylint: disable=C0103
+
 import logging
 import sys
 

anvil/packaging/helpers/changelog.py

@@ -77,7 +77,7 @@ class GitChangeLog(object):
         if len(ret) == 1:
             ret = ret[0]
         else:
-            ret = filter(lambda x: x.strip() != '', ret)
+            ret = [x for x in ret if x.strip() != '']
             ret = "\n".join(ret)
         return ret
 

anvil/packaging/helpers/pip_helper.py

@@ -14,8 +14,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-from distutils import version as vr
-
 import copy
 import pkg_resources
 import xmlrpclib

anvil/packaging/pip.py

@@ -21,7 +21,6 @@ from anvil import shell as sh
 
 from anvil.packaging.helpers import pip_helper
 
-import pkg_resources
 
 LOG = logging.getLogger(__name__)
 

anvil/packaging/yum.py

@@ -91,7 +91,7 @@ class YumPackager(pack.Packager):
                 non_same_versions_packages[p.name].append(p)
 
         satisfying_packages = []
-        for (name, packages) in non_same_versions_packages.items():
+        for (_, packages) in non_same_versions_packages.items():
             if len(packages) == 1:
                 satisfying_packages.extend(packages)
             else:

anvil/shell.py

@@ -38,8 +38,8 @@ SHELL_QUOTE_REPLACERS = {
     "\"": "\\\"",
     "(": "\\(",
     ")": "\\)",
-    "$": '\$',
-    '`': '\`',
+    "$": "\\$",
+    "`": "\\`",
 }
 
 # Locally stash these so that they can not be changed

anvil/utils.py

@@ -51,7 +51,7 @@ from anvil import version
 
 from anvil.pprint import center_text
 
-MONTY_PYTHON_TEXT_RE = re.compile("([a-z0-9A-Z\?!.,'\"]+)")
+MONTY_PYTHON_TEXT_RE = re.compile(r"([a-z0-9A-Z\?!.,'\"]+)")
 
 # Thx cowsay
 # See: http://www.nog.net/~tony/warez/cowsay.shtml

pylintrc

@@ -1,42 +1,271 @@
-# The format of this file isn't really documented; just use --generate-rcfile
+[MASTER]
 
-[Master]
+# Specify a configuration file.
+#rcfile=
 
-[Messages Control]
+# Python code to execute, usually for sys.path manipulation such as
+# pygtk.require().
+#init-hook=
 
+# Profiled execution.
+profile=no
+
+# Add <file or directory> to the black list. It should be a base name, not a
+# path. You may set this option multiple times.
+
+# ignore=
+
+# Pickle collected data for later comparisons.
+persistent=yes
+
+# List of plugins (as comma separated values of python modules names) to load,
+# usually to register additional checkers.
+load-plugins=
+
+
+[MESSAGES CONTROL]
+
+# Enable the message, report, category or checker with the given id(s). You can
+# either give multiple identifier separated by comma (,) or put this option
+# multiple time.
+#enable=
+# Disable the message, report, category or checker with the given id(s). You
+# can either give multiple identifier separated by comma (,) or put this option
+# multiple time.
 # http://pylint-messages.wikidot.com/all-codes
-# NOTE(justinsb): We might want to have a 2nd strict pylintrc in future
+
+# I0011: Locally disabling %s
+# I0012: Locally enabling %s
+# I0013: Ignoring entire file
 # C0111: Don't require docstrings on every method
+# E0213: We want different names for 'self', e. g. 'inner_self'
+# E0611: No name in module -- test cover that
+# E1101: Mocks make pylint type deduction crazy
+# E1103: When some types could not be inferred, we ignore pylint
+# F0401: Unable to import smth -- test cover that
+# R0201: Method could be a function
+# TODO(aababilov): remove similar lines
+# R0801: Similar lines in %s files
 # R0912: Too many branches (huh)
 # R0914: Too many local variables is odd.
+# R0922: Abstract class is only referenced %s times
+# W0141: Used builtin function %r
 # W0142: *args and **kwargs are fine.
+# W0212: Access to a protected member %s of a client class
+# W0223: Don't want to override all the abstract methods
+# W0232: Our models have no __init__ methods, but this is OK
+# W0401: Wildcard imports are fine
 # W0511: TODOs in code comments are fine.
+# W0603: Using the global statement
 # W0613: Unused argument '??' should be ok (they are useful sometimes to know intention of variable)
 # W0622: Redefining id is fine.
-disable=C0111,W0142,W0622,C0301,R0902,R0201,R0914,W0613,R0912,R0801
+# W0702: No exception type(s) specified
+# W0703: Catching "Exception" is fine if you need it
+disable=I0011,I0012,I0013,C0111,E0213,E0611,E1101,E1103,F0401,R0201,R0801,R0912,R0914,R0922,W0141,W0142,W0212,W0223,W0232,W0401,W0511,W0603,W0613,W0622,W0702,W0703
 
-[Basic]
+[REPORTS]
 
-# Variable names can be 1 to 31 characters long, with lowercase and underscores
-variable-rgx=[a-z_][a-z0-9_]{0,30}$
+# Set the output format. Available formats are text, parseable, colorized, msvs
+# (visual studio) and html
+output-format=parseable
 
-# Argument names can be 2 to 31 characters long, with lowercase and underscores
-argument-rgx=[a-z_][a-z0-9_]{1,30}$
+# Include message's id in output
+include-ids=yes
 
-# Method names should be at least 3 characters long
-# and be lowercased with underscores
-method-rgx=([a-z_][a-z0-9_]{2,50}|setUp|tearDown)$
+# Put messages in a separate file for each module / package specified on the
+# command line instead of printing them on stdout. Reports (if any) will be
+# written in a file name "pylint_global.[txt|html]".
+files-output=no
 
-# Don't require docstrings on tests.
-no-docstring-rgx=((__.*__)|([tT]est.*)|setUp|tearDown)$
+# Tells whether to display a full report or only the messages
+reports=no
 
-[Design]
+# Python expression which should return a note less than 10 (10 is the highest
+# note). You have access to the variables errors warning, statement which
+# respectively contain the number of errors / warnings messages and the total
+# number of statements analyzed. This is used by the global evaluation report
+# (R0004).
+evaluation=10.0 - ((float(5 * error + warning + refactor + convention) / statement) * 10)
 
-max-public-methods=100
-min-public-methods=0
-max-args=6
+# Add a comment according to your evaluation note. This is used by the global
+# evaluation report (R0004).
+comment=no
 
-[Variables]
+
+[VARIABLES]
+
+# Tells whether we should check for unused import in __init__ files.
+init-import=no
+
+# A regular expression matching names used for dummy variables (i.e. not used).
+dummy-variables-rgx=.*_|dummy|error
 
 # List of additional names supposed to be defined in builtins. Remember that
 # you should avoid to define new builtins when possible.
+additional-builtins=_
+
+
+[FORMAT]
+
+# Maximum number of characters on a single line.
+# make it 80 some day
+max-line-length=150
+
+# Maximum number of lines in a module
+# TODO(aababilov): make it 1024
+max-module-lines=2000
+
+# String used as indentation unit. This is usually " " (4 spaces) or "\t" (1
+# tab).
+indent-string='    '
+
+
+[SIMILARITIES]
+
+# Minimum lines number of a similarity.
+min-similarity-lines=5
+
+# Ignore comments when computing similarities.
+ignore-comments=yes
+
+# Ignore docstrings when computing similarities.
+ignore-docstrings=yes
+
+
+[TYPECHECK]
+
+# Tells whether missing members accessed in mixin class should be ignored. A
+# mixin class is detected if its name ends with "mixin" (case insensitive).
+ignore-mixin-members=yes
+
+# List of classes names for which member attributes should not be checked
+# (useful for classes with attributes dynamically set).
+ignored-classes=UUID
+
+# When zope mode is activated, add a predefined set of Zope acquired attributes
+# to generated-members.
+zope=no
+
+# List of members which are set dynamically and missed by pylint inference
+# system, and so shouldn't trigger E0201 when accessed.
+generated-members=AndReturn
+
+
+[MISCELLANEOUS]
+
+# List of note tags to take in consideration, separated by a comma.
+notes=FIXME,XXX,TODO
+
+
+[BASIC]
+
+# Required attributes for module, separated by a comma
+required-attributes=
+
+# List of builtins function names that should not be used, separated by a comma
+bad-functions=map,filter,apply,input
+
+# Regular expression which should only match correct module names
+module-rgx=(([a-z_][a-z0-9_]*)|([A-Z][a-zA-Z0-9]+))$
+
+# Regular expression which should only match correct module level names
+# NOTE(aababilov): allow contants have names like variables
+const-rgx=(([A-Z_][A-Z0-9_]*)|(__.*__)|[a-z_][a-z0-9_]{0,30})$
+
+# Regular expression which should only match correct class names
+class-rgx=[A-Z_][a-zA-Z0-9]+$
+
+# Regular expression which should only match correct function names
+function-rgx=[a-z_][a-z0-9_]{2,30}$
+
+# Regular expression which should only match correct method names
+method-rgx=[a-z_][a-z0-9_]{2,30}|setUp|tearDown$
+
+# Regular expression which should only match correct instance attribute names
+attr-rgx=[a-z_][a-z0-9_]{0,30}$
+
+# Regular expression which should only match correct argument names
+# allow short names like `fn'
+argument-rgx=[a-z_][a-z0-9_]{1,30}$
+
+# Regular expression which should only match correct variable names
+# variable-rgx=[a-z_][a-z0-9_]{2,30}$
+variable-rgx=[a-z_][a-z0-9_]{0,30}$
+
+# Regular expression which should only match correct list comprehension /
+# generator expression variable names
+inlinevar-rgx=[A-Za-z_][A-Za-z0-9_]*$
+
+# Good variable names which should always be accepted, separated by a comma
+good-names=i,j,k,ex,Run,_
+
+# Bad variable names which should always be refused, separated by a comma
+bad-names=foo,bar,baz,toto,tutu,tata
+
+# Regular expression which should only match functions or classes name which do
+# not require a docstring
+no-docstring-rgx=__.*__
+
+
+[CLASSES]
+
+# List of interface methods to ignore, separated by a comma. This is used for
+# instance to not check methods defines in Zope's Interface base class.
+ignore-iface-methods=isImplementedBy,deferred,extends,names,namesAndDescriptions,queryDescriptionFor,getBases,getDescriptionFor,getDoc,getName,getTaggedValue,getTaggedValueTags,isEqualOrExtendedBy,setTaggedValue,isImplementedByInstancesOf,adaptWith,is_implemented_by
+
+# List of method names used to declare (i.e. assign) instance attributes.
+defining-attr-methods=__init__,__new__,setUp
+
+
+[IMPORTS]
+
+# Deprecated modules which should not be used, separated by a comma
+deprecated-modules=regsub,string,TERMIOS,Bastion,rexec
+
+# Create a graph of every (i.e. internal and external) dependencies in the
+# given file (report RP0402 must not be disabled)
+import-graph=
+
+# Create a graph of external dependencies in the given file (report RP0402 must
+# not be disabled)
+ext-import-graph=
+
+# Create a graph of internal dependencies in the given file (report RP0402 must
+# not be disabled)
+int-import-graph=
+
+
+[DESIGN]
+
+# Maximum number of arguments for function / method
+# TODO(aababilov): make it 10
+max-args=13
+
+# Argument names that match this expression will be ignored. Default to name
+# with leading underscore
+ignored-argument-names=_.*
+
+# Maximum number of locals for function / method body
+max-locals=15
+
+# Maximum number of return / yield for function / method body
+max-returns=6
+
+# Maximum number of branch for function / method body
+max-branchs=12
+
+# Maximum number of statements in function / method body
+# TODO(aababilov): make it 50
+max-statements=60
+
+# Maximum number of parents for a class (see R0901).
+max-parents=7
+
+# Maximum number of attributes for a class (see R0902).
+max-attributes=12
+
+# Minimum number of public methods for a class (see R0903).
+min-public-methods=0
+
+# Maximum number of public methods for a class (see R0904).
+max-public-methods=80

setup.cfg

@@ -0,0 +1,10 @@
+[nosetests]
+verbosity=2
+
+[build_sphinx]
+source-dir = docs/source
+build-dir = docs/build
+all_files = 1
+
+[upload_sphinx]
+upload-dir = docs/build/html

tools/pre-commit

@@ -9,7 +9,7 @@ trap 'git stash pop -q' EXIT
 STATUS=0
 FILES="$(git diff --cached --name-only --diff-filter=AM | grep -E '\.py$')"
 if [ -n "$FILES" ]; then
-    pep8 -r $FILES || STATUS=1
+    pylint $FILES || STATUS=1
     if grep -nEH --color '(import pdb|pdb.set_trace)' $FILES; then
         echo "Please remove pdb"
         STATUS=1