Mercurial > cpython-lru_cache-weakref

annotate Tools/scripts/byteyears.py @ 80661:94de77bd0b4b 2.7

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Issue #16194: document imp.load_dynamic problems when read several extension modules from the same binary object file.
author Andrew Svetlov <andrew.svetlov@gmail.com>
date Thu, 29 Nov 2012 19:51:28 +0200
parents 981fff7363b9
children 6b18a095c2e7
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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73758db2f464 /usr/local/bin/python -> /usr/bin/env python
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1 #! /usr/bin/env python
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2
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3 # Print the product of age and size of each file, in suitable units.
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4 #
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5 # Usage: byteyears [ -a | -m | -c ] file ...
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6 #
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7 # Options -[amc] select atime, mtime (default) or ctime as age.
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8
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bfc655074523 posix -> os
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9 import sys, os, time
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10 from stat import *
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11
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12 def main():
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13
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14 # Use lstat() to stat files if it exists, else stat()
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15 try:
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16 statfunc = os.lstat
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17 except AttributeError:
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18 statfunc = os.stat
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19
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20 # Parse options
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21 if sys.argv[1] == '-m':
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22 itime = ST_MTIME
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23 del sys.argv[1]
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24 elif sys.argv[1] == '-c':
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25 itime = ST_CTIME
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26 del sys.argv[1]
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27 elif sys.argv[1] == '-a':
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28 itime = ST_CTIME
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29 del sys.argv[1]
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30 else:
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31 itime = ST_MTIME
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32
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33 secs_per_year = 365.0 * 24.0 * 3600.0 # Scale factor
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34 now = time.time() # Current time, for age computations
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35 status = 0 # Exit status, set to 1 on errors
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37 # Compute max file name length
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38 maxlen = 1
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39 for filename in sys.argv[1:]:
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40 maxlen = max(maxlen, len(filename))
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42 # Process each argument in turn
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43 for filename in sys.argv[1:]:
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44 try:
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45 st = statfunc(filename)
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46 except os.error, msg:
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47 sys.stderr.write("can't stat %r: %r\n" % (filename, msg))
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48 status = 1
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49 st = ()
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50 if st:
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51 anytime = st[itime]
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52 size = st[ST_SIZE]
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53 age = now - anytime
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54 byteyears = float(size) * float(age) / secs_per_year
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55 print filename.ljust(maxlen),
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56 print repr(int(byteyears)).rjust(8)
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58 sys.exit(status)
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59
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60 if __name__ == '__main__':
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61 main()