Standardize spyglass-plugin-xls code with YAPF

Implements documentation updates from [0] to standardize formatting for
all Airship projects.

[0] https://review.opendev.org/#/c/671291/

Change-Id: I723af0d91e24a306f05c06a3ddf456757489f7f0

.style.yapf

@@ -0,0 +1,10 @@
+[style]
+based_on_style = pep8
+spaces_before_comment = 2
+column_limit = 79
+blank_line_before_nested_class_or_def = false
+blank_line_before_module_docstring = true
+split_before_logical_operator = true
+split_before_first_argument = true
+allow_split_before_dict_value = false
+split_before_arithmetic_operator = true

setup.cfg

@@ -22,11 +22,3 @@ classifier =
 [files]
 packages =
     spyglass_plugin_xls
-
-[yapf]
-based_on_style = pep8
-allow_split_before_dict_value = false
-blank_line_before_nested_class_or_def = true
-blank_line_before_module_docstring = true
-split_before_logical_operator = false
-split_before_first_argument = true

spyglass_plugin_xls/excel.py

@@ -28,7 +28,6 @@ LOG = logging.getLogger(__name__)
 
 
 class ExcelPlugin(BaseDataSourcePlugin):
-
     def __init__(self, region, **kwargs):
         super().__init__(region)
         LOG.info("Excel Plugin Initializing")

spyglass_plugin_xls/excel_parser.py

@@ -14,11 +14,11 @@
 
 from copy import deepcopy
 import logging
+import pprint
+import re
 
 from openpyxl import load_workbook
 from openpyxl import Workbook
-import pprint
-import re
 import yaml
 
 from spyglass_plugin_xls import exceptions

test-requirements.txt

@@ -4,6 +4,8 @@ pytest-xdist==1.28.0
 pytest-cov==2.6.1
 
 # Formatting
+flake8==3.7.8
+flake8-import-order==0.18.1
 yapf==0.27.0
 
 # Linting

tox.ini

@@ -22,9 +22,9 @@ commands =
 [testenv:fmt]
 basepython = python3
 deps =
-    -r{toxinidir}/test-requirements.txt
+  -r{toxinidir}/test-requirements.txt
 commands =
-    yapf -ir {toxinidir}/spyglass_plugin_xls {toxinidir}/setup.py {toxinidir}/tests
+  yapf -ir {toxinidir}/spyglass_plugin_xls {toxinidir}/setup.py {toxinidir}/tests
 
 [testenv:pep8]
 basepython = python3
@@ -41,29 +41,26 @@ whitelist_externals =
 [testenv:safety]
 basepython = python3
 deps =
-    safety
+  safety
 commands =
-    safety check -r {toxinidir}/requirements.txt --full-report
-    safety check -r {toxinidir}/test-requirements.txt --full-report
-    safety check -r {toxinidir}/doc/requirements.txt --full-report
+  safety check -r {toxinidir}/requirements.txt --full-report
+  safety check -r {toxinidir}/test-requirements.txt --full-report
+  safety check -r {toxinidir}/doc/requirements.txt --full-report
 
 [testenv:bandit]
 basepython = python3
 deps =
-    bandit
+  bandit
 commands = bandit -r spyglass_plugin_xls -n 5
 
-[flake8]
-ignore = W503
-
 [testenv:docs]
 basepython = python3
 deps =
-    -r{toxinidir}/requirements.txt
-    -r{toxinidir}/doc/requirements.txt
+  -r{toxinidir}/requirements.txt
+  -r{toxinidir}/doc/requirements.txt
 commands =
-    rm -rf doc/build
-    sphinx-build -b html doc/source doc/build -n -W -v
+  rm -rf doc/build
+  sphinx-build -b html doc/source doc/build -n -W -v
 whitelist_externals = rm
 
 [testenv:cover]
@@ -77,3 +74,17 @@ commands =
       --cov-report term --cov-fail-under 92 tests/'
 whitelist_externals =
   bash
+
+[flake8]
+filename = *.py
+show-source = true
+# [H106] Don't put vim configuration in source files.
+# [H201] No 'except:' at least use 'except Exception:'
+# [H904] Delay string interpolations at logging calls.
+enable-extensions = H106,H201,H904
+# [W503] line break before binary operator
+ignore = W503
+exclude=.venv,.git,.tox,build,dist,*lib/python*,*egg,tools,*.ini,*.po,*.pot
+max-complexity = 24
+application-import-names = spyglass_plugin_xls
+import-order-style = pep8