Mercurial > ~astiob > upreckon > hgweb
annotate compat.py @ 123:90c002c960cb
Fixed CPU time display on UNIX
Previously, the total CPU time spent by the testee on all
test cases up to and including the current one was displayed.
| author | Oleg Oshmyan <chortos@inbox.lv> |
|---|---|
| date | Sun, 24 Apr 2011 19:28:40 +0100 |
| parents | cd347cfca272 |
| children | e17ae4ccbc58 92f76baebcc6 |
| rev | line source |
|---|---|
| 78 | 1 # Copyright (c) 2010-2011 Chortos-2 <chortos@inbox.lv> |
| 16 | 2 |
| 21 | 3 # A compatibility layer for Python 2.5+. This is what lets test.py |
| 4 # run on all versions of Python starting with 2.5, including Python 3. | |
| 5 | |
| 6 # A few notes regarding some compatibility-driven peculiarities | |
| 7 # in the use of the language that can be seen in all modules: | |
| 8 # | |
| 9 # * Except statements never specify target; instead, when needed, | |
| 10 # the exception is taken from sys.exc_info(). Blame the incompatible | |
| 11 # syntaxes of the except clause in Python 2.5 and Python 3 and the lack | |
| 12 # of preprocessor macros in Python of any version ;P. | |
| 13 # | |
| 14 # * Keyword-only parameters are never used, even for parameters | |
| 15 # that should never be given in as arguments. The reason is | |
| 16 # the laziness of some Python developers who have failed to finish | |
| 17 # implementing them in Python 2 even though they had several years | |
| 18 # of time and multiple version releases to sneak them in. | |
| 19 # | |
| 20 # * Abstract classes are only implemented for Python 2.6 and 2.7. | |
| 21 # ABC's require the abc module and the specification of metaclasses, | |
| 22 # but in Python 2.5, the abc module does not exist, while in Python 3, | |
| 23 # metaclasses are specified using a syntax totally incompatible | |
| 24 # with Python 2 and not usable conditionally via exec() and such | |
| 25 # because it is a detail of the syntax of the class statement itself. | |
| 26 | |
|
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27 # Some code was adapted from Python 2.7.1 and its documentation. |
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28 # This code is clearly marked as such in preceding comments and is |
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29 # covered by copyright as follows: |
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30 # |
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31 # Copyright (c) 2001-2010 Python Software Foundation; all rights reserved. |
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32 # |
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33 # The code is used according to the PSF License Agreement |
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34 # for Python 2.7.1, whose full text is available from your local |
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35 # installation of Python (enter 'license()' in the interactive |
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36 # interpreter) or from the Web at the following URL: |
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37 # |
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38 # http://docs.python.org/2.7.1/license.html#terms-and-conditions-for-accessing-or-otherwise-using-python |
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39 |
| 27 | 40 try: |
| 41 import builtins | |
| 42 except ImportError: | |
| 43 import __builtin__ as builtins | |
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44 |
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45 pseudobuiltins = ('say', 'basestring', 'range', 'map', 'zip', 'filter', 'next', |
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46 'items', 'keys', 'values', 'zip_longest', 'callable', 'ceil') |
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47 __all__ = pseudobuiltins + ('ABCMeta', 'abstractmethod', 'CompatBuiltins') |
| 21 | 48 |
| 16 | 49 try: |
| 50 # Python 3 | |
| 51 exec('say = print') | |
| 52 except SyntaxError: | |
| 53 try: | |
| 54 # Python 2.6/2.7 | |
| 21 | 55 # An alternative is exec('from __future__ import print_function; say = print'); |
| 56 # if problems arise with the current line, one should try replacing it | |
| 57 # with this one with the future import before abandoning the idea altogether | |
| 27 | 58 say = getattr(builtins, 'print') |
| 16 | 59 except Exception: |
| 60 # Python 2.5 | |
| 61 import sys | |
| 62 # This should fully emulate the print function of Python 2.6 in Python 2.3+ | |
| 21 | 63 # The error messages are taken from Python 2.6 |
| 64 # The name bindings at the bottom of this file are in effect | |
| 16 | 65 def saytypeerror(value, name): |
| 21 | 66 return TypeError(' '.join((name, 'must be None, str or unicode, not', type(value).__name__))) |
| 16 | 67 def say(*values, **kwargs): |
| 68 sep = kwargs.pop('sep' , None) | |
| 69 end = kwargs.pop('end' , None) | |
| 70 file = kwargs.pop('file', None) | |
| 71 if kwargs: raise TypeError("'%s' is an invalid keyword argument for this function" % kwargs.popitem()[0]) | |
| 72 if sep is None: sep = ' ' | |
| 73 if end is None: end = '\n' | |
| 74 if file is None: file = sys.stdout | |
| 75 if not isinstance(sep, basestring): raise saytypeerror(sep, 'sep') | |
| 76 if not isinstance(end, basestring): raise saytypeerror(end, 'end') | |
| 21 | 77 file.write(sep.join(map(str, values)) + end) |
| 16 | 78 |
|
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79 try: |
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80 from os.path import relpath |
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81 except ImportError: |
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82 # Python 2.5 |
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83 import os.path as _path |
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84 |
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85 # Adapted from Python 2.7.1 |
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86 |
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87 if hasattr(_path, 'splitunc'): |
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88 def _abspath_split(path): |
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89 abs = _path.abspath(_path.normpath(path)) |
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90 prefix, rest = _path.splitunc(abs) |
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91 is_unc = bool(prefix) |
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92 if not is_unc: |
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93 prefix, rest = _path.splitdrive(abs) |
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94 return is_unc, prefix, [x for x in rest.split(_path.sep) if x] |
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95 else: |
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96 def _abspath_split(path): |
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97 prefix, rest = _path.splitdrive(_path.abspath(_path.normpath(path))) |
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98 return False, prefix, [x for x in rest.split(_path.sep) if x] |
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99 |
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100 def relpath(path, start=_path.curdir): |
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101 """Return a relative version of a path""" |
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102 |
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103 if not path: |
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104 raise ValueError("no path specified") |
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105 |
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106 start_is_unc, start_prefix, start_list = _abspath_split(start) |
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107 path_is_unc, path_prefix, path_list = _abspath_split(path) |
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108 |
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109 if path_is_unc ^ start_is_unc: |
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110 raise ValueError("Cannot mix UNC and non-UNC paths (%s and %s)" |
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111 % (path, start)) |
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112 if path_prefix.lower() != start_prefix.lower(): |
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113 if path_is_unc: |
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114 raise ValueError("path is on UNC root %s, start on UNC root %s" |
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115 % (path_prefix, start_prefix)) |
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116 else: |
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117 raise ValueError("path is on drive %s, start on drive %s" |
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118 % (path_prefix, start_prefix)) |
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119 # Work out how much of the filepath is shared by start and path. |
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120 i = 0 |
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121 for e1, e2 in zip(start_list, path_list): |
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122 if e1.lower() != e2.lower(): |
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123 break |
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124 i += 1 |
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125 |
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126 rel_list = [_path.pardir] * (len(start_list)-i) + path_list[i:] |
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127 if not rel_list: |
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128 return _path.curdir |
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129 return _path.join(*rel_list) |
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130 |
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131 _path.relpath = relpath |
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132 |
| 16 | 133 def import_urllib(): |
| 134 try: | |
| 135 # Python 3 | |
| 136 import urllib.request | |
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137 return urllib.request, lambda url: urllib.request.urlopen(url).read().decode('ascii') |
| 16 | 138 except ImportError: |
| 139 # Python 2 | |
| 140 import urllib | |
| 21 | 141 return urllib, lambda url: urllib.urlopen(url).read() |
| 142 | |
| 143 try: | |
| 144 from abc import ABCMeta, abstractmethod | |
| 145 except ImportError: | |
| 146 ABCMeta, abstractmethod = None, lambda x: x | |
| 147 | |
| 148 try: | |
| 149 basestring = basestring | |
| 150 except NameError: | |
| 151 basestring = str | |
| 152 | |
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153 # xrange is set to support simple testconf.py's written for test.py 1.x |
| 21 | 154 try: |
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155 xrange = range = xrange |
| 21 | 156 except NameError: |
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157 xrange = range = range |
| 21 | 158 |
| 159 try: | |
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160 callable = callable |
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161 except NameError: |
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162 from collections import Callable |
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163 callable = lambda obj: isinstance(obj, Callable) |
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164 |
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165 try: |
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166 next = next |
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167 except NameError: |
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168 next = lambda obj: obj.next() |
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169 |
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170 try: |
| 21 | 171 from itertools import imap as map |
| 172 except ImportError: | |
| 173 map = map | |
| 174 | |
| 175 try: | |
| 176 from itertools import izip as zip | |
| 177 except ImportError: | |
| 178 zip = zip | |
| 179 | |
| 180 try: | |
| 181 from itertools import ifilter as filter | |
| 182 except ImportError: | |
| 183 filter = filter | |
| 184 | |
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185 try: |
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186 items = dict.iteritems |
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187 except AttributeError: |
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188 items = dict.items |
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189 |
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190 try: |
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191 keys = dict.iterkeys |
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192 except AttributeError: |
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193 keys = dict.keys |
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194 |
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195 try: |
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196 values = dict.itervalues |
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197 except AttributeError: |
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198 values = dict.values |
| 21 | 199 |
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200 from math import ceil |
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201 if not isinstance(ceil(0), int): |
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202 def ceil(x): |
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203 y = int(x) |
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204 if y < x: y += 1 |
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205 return y |
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206 |
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207 try: |
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208 # Python 3 |
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209 from itertools import zip_longest |
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210 except ImportError: |
| 31 | 211 try: |
| 212 # Python 2.6/2.7 | |
| 213 from itertools import izip_longest as zip_longest | |
| 214 except ImportError: | |
| 215 # Python 2.5 | |
| 216 from itertools import chain, repeat | |
| 217 # Adapted from the documentation of itertools.izip_longest | |
| 218 def zip_longest(*args, **kwargs): | |
| 219 fillvalue = kwargs.get('fillvalue') | |
| 220 def sentinel(counter=([fillvalue]*(len(args)-1)).pop): | |
| 221 yield counter() | |
| 222 fillers = repeat(fillvalue) | |
| 223 iters = [chain(it, sentinel(), fillers) for it in args] | |
| 224 try: | |
| 225 for tup in zip(*iters): | |
| 226 yield tup | |
| 227 except IndexError: | |
| 228 pass | |
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229 |
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230 # Automatically import * from this module into testconf.py's |
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231 class CompatBuiltins(object): |
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232 __slots__ = 'originals' |
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233 globals = globals() |
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234 def __enter__(self): |
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235 self.originals = {} |
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236 for name in pseudobuiltins: |
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237 try: |
| 27 | 238 self.originals[name] = getattr(builtins, name) |
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239 except AttributeError: |
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240 pass |
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241 setattr(builtins, name, self.globals[name]) |
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242 return self |
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243 def __exit__(self, exc_type, exc_val, exc_tb): |
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244 for name in self.originals: |
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245 setattr(builtins, name, self.originals[name]) |