1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
|
# Copyright 2014 Google Inc.
# This program is free software; you can redistribute it and/or modify it under
# the terms of the GNU General Public License as published by the Free Software
# Foundation; either version 2 of the License, or (at your option) any later
# version.
#
# This program is distributed in the hope that it will be useful, but WITHOUT
# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along with
# this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
"""Check Python 2 code for Python 2/3 source-compatible issues."""
from __future__ import absolute_import
from pylint import checkers, interfaces
from pylint.checkers import utils
class Python3Checker(checkers.BaseChecker):
__implements__ = interfaces.IAstroidChecker
name = 'python3'
msgs = {
# Errors for what will syntactically break in Python 3, warnings for
# everything else.
'E1601': ('print statement used',
'print-statement',
'Used when a print statement is used '
'(`print` is a function in Python 3)',
{'maxversion': (3,0)}),
'W1601': ('apply built-in referenced',
'apply-builtin',
'Used when the apply built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1602': ('basestring built-in referenced',
'basestring-builtin',
'Used when the basestring built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1603': ('buffer built-in referenced',
'buffer-builtin',
'Used when the buffer built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1604': ('cmp built-in referenced',
'cmp-builtin',
'Used when the cmp built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1605': ('coerce built-in referenced',
'coerce-builtin',
'Used when the coerce built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1606': ('execfile built-in referenced',
'execfile-builtin',
'Used when the execfile built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1607': ('file built-in referenced',
'file-builtin',
'Used when the file built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1608': ('long built-in referenced',
'long-builtin',
'Used when the long built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1609': ('raw_input built-in referenced',
'raw_input-builtin',
'Used when the raw_input built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1610': ('reduce built-in referenced',
'reduce-builtin',
'Used when the reduce built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1611': ('StandardError built-in referenced',
'standarderror-builtin',
'Used when the StandardError built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1612': ('unicode built-in referenced',
'unicode-builtin',
'Used when the unicode built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1613': ('xrange built-in referenced',
'xrange-builtin',
'Used when the xrange built-in function is referenced '
'(missing from Python 3)',
{'maxversion': (3, 0)}),
'W1614': ('__coerce__ method defined',
'coerce-method',
'Used when a __coerce__ method is defined '
'(method is not used by Python 3)',
{'maxversion': (3, 0)}),
'W1615': ('__delslice__ method defined',
'delslice-method',
'Used when a __delslice__ method is defined '
'(method is not used by Python 3)',
{'maxversion': (3, 0)}),
'W1616': ('__getslice__ method defined',
'getslice-method',
'Used when a __getslice__ method is defined '
'(method is not used by Python 3)',
{'maxversion': (3, 0)}),
'W1617': ('__setslice__ method defined',
'setslice-method',
'Used when a __setslice__ method is defined '
'(method is not used by Python 3)',
{'maxversion': (3, 0)}),
}
_missing_builtins = frozenset([
'apply',
'basestring',
'buffer',
'cmp',
'coerce',
'execfile',
'file',
'long',
'raw_input',
'reduce',
'StandardError',
'unicode',
'xrange',
])
_unused_magic_methods = frozenset([
'__coerce__',
'__delslice__',
'__getslice__',
'__setslice__',
])
def visit_function(self, node):
if node.is_method() and node.name in self._unused_magic_methods:
method_name = node.name
if node.name.startswith('__'):
method_name = node.name[2:-2]
self.add_message(method_name + '-method', node=node)
def visit_name(self, node):
"""Detect when a built-in that is missing in Python 3 is referenced."""
found_node = node.lookup(node.name)[0]
if getattr(found_node, 'name', None) == '__builtin__':
if node.name in self._missing_builtins:
message = node.name.lower() + '-builtin'
self.add_message(message, node=node)
@utils.check_messages('print-statement')
def visit_print(self, node):
self.add_message('print-statement', node=node)
def register(linter):
linter.register_checker(Python3Checker(linter))
|
