Mercurial > cpython-lru_cache-weakref

annotate Doc/tools/sphinxext/patchlevel.py @ 87690:66c1c9f32567 default tip

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Add use_weakref option to functools.lru_cache The use_weakref option makes lru_cache create weak references to the function arguments when creating the cache key, which prevents them from staying in the memory forever even after all other references to them are gone. This is a proof of concept for http://bugs.python.org/issue19859
author Radomir Dopieralski <devel@sheep.art.pl>
date Tue, 03 Dec 2013 16:02:48 +0100
parents 5ba6124da155
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 # -*- coding: utf-8 -*-
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2 """
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3 patchlevel.py
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4 ~~~~~~~~~~~~~
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5
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6 Extract version info from Include/patchlevel.h.
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7 Adapted from Doc/tools/getversioninfo.
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9 :copyright: 2007-2008 by Georg Brandl.
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10 :license: Python license.
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11 """
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13 import os
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14 import re
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15 import sys
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17 def get_header_version_info(srcdir):
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18 patchlevel_h = os.path.join(srcdir, '..', 'Include', 'patchlevel.h')
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20 # This won't pick out all #defines, but it will pick up the ones we
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21 # care about.
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22 rx = re.compile(r'\s*#define\s+([a-zA-Z][a-zA-Z_0-9]*)\s+([a-zA-Z_0-9]+)')
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24 d = {}
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25 f = open(patchlevel_h)
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26 try:
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27 for line in f:
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28 m = rx.match(line)
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29 if m is not None:
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30 name, value = m.group(1, 2)
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31 d[name] = value
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32 finally:
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33 f.close()
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35 release = version = '%s.%s' % (d['PY_MAJOR_VERSION'], d['PY_MINOR_VERSION'])
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36 micro = int(d['PY_MICRO_VERSION'])
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37 release += '.' + str(micro)
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39 level = d['PY_RELEASE_LEVEL']
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40 suffixes = {
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41 'PY_RELEASE_LEVEL_ALPHA': 'a',
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42 'PY_RELEASE_LEVEL_BETA': 'b',
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43 'PY_RELEASE_LEVEL_GAMMA': 'rc',
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44 }
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45 if level != 'PY_RELEASE_LEVEL_FINAL':
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46 release += suffixes[level] + str(int(d['PY_RELEASE_SERIAL']))
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47 return version, release
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50 def get_sys_version_info():
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51 major, minor, micro, level, serial = sys.version_info
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52 release = version = '%s.%s' % (major, minor)
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53 release += '.%s' % micro
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54 if level != 'final':
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55 release += '%s%s' % (level[0], serial)
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56 return version, release
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59 def get_version_info():
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60 try:
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61 return get_header_version_info('.')
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62 except (IOError, OSError):
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63 version, release = get_sys_version_info()
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64 print >>sys.stderr, 'Can\'t get version info from Include/patchlevel.h, ' \
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65 'using version of this interpreter (%s).' % release
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66 return version, release
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68 if __name__ == '__main__':
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69 print(get_header_version_info('.')[1])