Remove Python 2->3 checks
These were not running on Python 3 codebases which is everything now. Note that 'assertEquals'/'assertNotEquals', which is checked for by one test, is still present in some codebases, despite it being removed in Python 3. This is because this variant is added by testtools, which adds its own deprecation warning that we don't need to duplicate. Change-Id: I3f15376db78886b7eecad3fdfdd363c6ea5d19c6 Signed-off-by: Stephen Finucane <stephenfin@redhat.com>
This commit is contained in:
Stephen Finucane
parent
977ee03534
commit
e8a45225e1
@ -1,232 +0,0 @@
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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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import re
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import tokenize
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from hacking import core
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RE_OCTAL = re.compile(r"0+([1-9]\d*)")
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RE_PRINT = re.compile(r"\bprint(?:$|\s+[^\(])")
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@core.skip_on_py3
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@core.flake8ext
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def hacking_python3x_except_compatible(logical_line, noqa):
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r"""Check for except statements to be Python 3.x compatible
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As of Python 3.x, the construct 'except x,y:' has been removed.
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Use 'except x as y:' instead.
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Okay: try:\n pass\nexcept Exception:\n pass
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Okay: try:\n pass\nexcept (Exception, AttributeError):\n pass
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H231: try:\n pass\nexcept AttributeError, e:\n pass
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Okay: try:\n pass\nexcept AttributeError, e: # noqa\n pass
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"""
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if noqa:
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return
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def is_old_style_except(logical_line):
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return (',' in logical_line and
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')' not in logical_line.rpartition(',')[2])
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if (logical_line.startswith("except ") and
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logical_line.endswith(':') and
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is_old_style_except(logical_line)):
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yield 0, "H231: Python 3.x incompatible 'except x,y:' construct"
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@core.skip_on_py3
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@core.flake8ext
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def hacking_python3x_octal_literals(logical_line, tokens, noqa):
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r"""Check for octal literals in Python 3.x compatible form.
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As of Python 3.x, the construct "0755" has been removed.
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Use "0o755" instead".
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Okay: f(0o755)
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Okay: 'f(0755)'
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Okay: f(755)
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Okay: f(0)
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Okay: f(000)
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Okay: MiB = 1.0415
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H232: f(0755)
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Okay: f(0755) # noqa
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"""
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if noqa:
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return
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for token_type, text, _, _, _ in tokens:
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if token_type == tokenize.NUMBER:
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match = RE_OCTAL.match(text)
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if match:
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yield 0, ("H232: Python 3.x incompatible octal %s should be "
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"written as 0o%s " %
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(match.group(0)[1:], match.group(1)))
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@core.skip_on_py3
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@core.flake8ext
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def hacking_python3x_print_function(logical_line, noqa):
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r"""Check that all print occurrences look like print functions.
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Check that all occurrences of print look like functions, not
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print operator. As of Python 3.x, the print operator has
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been removed.
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Okay: print(msg)
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Okay: print (msg)
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Okay: print msg # noqa
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Okay: print()
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H233: print msg
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H233: print >>sys.stderr, "hello"
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H233: print msg,
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H233: print
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"""
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if noqa:
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return
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for match in RE_PRINT.finditer(logical_line):
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yield match.start(0), (
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"H233: Python 3.x incompatible use of print operator")
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@core.flake8ext
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def hacking_no_assert_equals(logical_line, tokens, noqa):
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r"""assert(Not)Equals() is deprecated, use assert(Not)Equal instead.
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Okay: self.assertEqual(0, 0)
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Okay: self.assertNotEqual(0, 1)
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H234: self.assertEquals(0, 0)
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H234: self.assertNotEquals(0, 1)
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Okay: self.assertEquals(0, 0) # noqa
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Okay: self.assertNotEquals(0, 1) # noqa
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"""
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if noqa:
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return
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for token_type, text, start_index, _, _ in tokens:
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if token_type == tokenize.NAME:
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if text == "assertEquals" or text == "assertNotEquals":
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yield (start_index[1],
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"H234: %s is deprecated, use %s" % (text, text[:-1]))
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@core.flake8ext
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def hacking_no_assert_underscore(logical_line, tokens, noqa):
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r"""assert_() is deprecated, use assertTrue instead.
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Okay: self.assertTrue(foo)
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H235: self.assert_(foo)
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Okay: self.assert_(foo) # noqa
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"""
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if noqa:
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return
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for token_type, text, start_index, _, _ in tokens:
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if token_type == tokenize.NAME and text == "assert_":
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yield (
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start_index[1],
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"H235: assert_ is deprecated, use assertTrue")
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@core.flake8ext
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def hacking_python3x_metaclass(logical_line, noqa):
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r"""Check for metaclass to be Python 3.x compatible.
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Okay: @six.add_metaclass(Meta)\nclass Foo(object):\n pass
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Okay: @six.with_metaclass(Meta)\nclass Foo(object):\n pass
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Okay: class Foo(object):\n '''docstring\n\n __metaclass__ = Meta\n'''
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H236: class Foo(object):\n __metaclass__ = Meta
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H236: class Foo(object):\n foo=bar\n __metaclass__ = Meta
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H236: class Foo(object):\n '''docstr.'''\n __metaclass__ = Meta
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H236: class Foo(object):\n __metaclass__ = \\n Meta
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Okay: class Foo(object):\n __metaclass__ = Meta # noqa
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"""
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if noqa:
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return
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split_line = logical_line.split()
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if (
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len(split_line) > 2
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and split_line[0] == '__metaclass__'
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and split_line[1] == '='
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):
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yield (logical_line.find('__metaclass__'),
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"H236: Python 3.x incompatible __metaclass__, "
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"use six.add_metaclass()")
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# NOTE(guochbo): This is removed module list:
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# http://python3porting.com/stdlib.html#removed-modules
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removed_modules = [
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'audiodev', 'Bastion', 'bsddb185', 'bsddb3',
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'Canvas', 'cfmfile', 'cl', 'commands', 'compiler'
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'dircache', 'dl', 'exception', 'fpformat',
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'htmllib', 'ihooks', 'imageop', 'imputil'
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'linuxaudiodev', 'md5', 'mhlib', 'mimetools'
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'MimeWriter', 'mimify', 'multifile', 'mutex',
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'new', 'popen2', 'posixfile', 'pure', 'rexec'
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'rfc822', 'sha', 'sgmllib', 'sre', 'stat'
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'stringold', 'sunaudio' 'sv', 'test.testall',
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'thread', 'timing', 'toaiff', 'user'
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]
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@core.flake8ext
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def hacking_no_removed_module(logical_line, noqa):
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r"""Check for removed modules in Python 3.
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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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H237: import thread
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Okay: import thread # noqa
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H237: import commands
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H237: import md5 as std_md5
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"""
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if noqa:
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return
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line = core.import_normalize(logical_line.strip())
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if line and line.split()[0] == 'import':
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module_name = line.split()[1].split('.')[0]
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if module_name in removed_modules:
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yield 0, ("H237: module %s is "
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"removed in Python 3" % module_name)
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RE_NEW_STYLE_CLASS = re.compile(r"^class [^(]+\(.+\):")
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@core.flake8ext
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@core.off_by_default
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def hacking_no_old_style_class(logical_line, noqa):
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r"""Check for old style classes.
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Examples:
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Okay: class Foo(object):\n pass
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Okay: class Foo(Bar, Baz):\n pass
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Okay: class Foo(object, Baz):\n pass
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Okay: class Foo(somefunc()):\n pass
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H238: class Bar:\n pass
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H238: class Bar():\n pass
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"""
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if noqa:
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return
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line = core.import_normalize(logical_line.strip())
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if line.startswith("class ") and not RE_NEW_STYLE_CLASS.match(line):
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yield (0, "H238: old style class declaration, "
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"use new style (inherit from `object`)")
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@ -0,0 +1,16 @@
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---
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upgrade:
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- |
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The following checks have been removed:
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- H231 (incompatible ``except x,y:`` construct)
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- H232 (incompatible octal format)
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- H233 (incompatible use of ``print`` operator)
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- H234 (``assertEquals``/``assertNotEquals`` is deprecated)
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- H235 (``assert_`` is deprecated)
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- H236 (incompatible ``__metaclass__``)
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- H237 (removed module)
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- H238 (old style classes)
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These all checked for Python 3-incompatible code. They were disabled on
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Python 3 codebases and have therefore been no-ops for some time now.
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@ -49,14 +49,6 @@ flake8.extension =
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H214 = hacking.checks.except_checks:hacking_assert_true_or_false_with_in
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H215 = hacking.checks.except_checks:hacking_assert_equal_in
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H216 = hacking.checks.mock_checks:hacking_no_third_party_mock
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H231 = hacking.checks.python23:hacking_python3x_except_compatible
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H232 = hacking.checks.python23:hacking_python3x_octal_literals
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H233 = hacking.checks.python23:hacking_python3x_print_function
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H234 = hacking.checks.python23:hacking_no_assert_equals
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H235 = hacking.checks.python23:hacking_no_assert_underscore
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H236 = hacking.checks.python23:hacking_python3x_metaclass
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H237 = hacking.checks.python23:hacking_no_removed_module
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H238 = hacking.checks.python23:hacking_no_old_style_class
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H301 = hacking.checks.imports:hacking_import_rules
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H306 = hacking.checks.imports:hacking_import_alphabetical
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H401 = hacking.checks.docstrings:hacking_docstring_start_space
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