<s> """<STR_LIT>""" <EOL> import os <EOL> import re <EOL> import sys <EOL> import logging <EOL> from itertools import imap <EOL> from random import randint , random <EOL> from optparse import OptionParser <EOL> from heapq import heappush , heappop , heapreplace <EOL> from _config import logtools_config , interpolate_config , AttrDict <EOL> __all__ = [ '<STR_LIT>' , '<STR_LIT>' , '<STR_LIT>' , '<STR_LIT>' ] <EOL> def logsample_parse_args ( ) : <EOL> parser = OptionParser ( ) <EOL> parser . add_option ( "<STR_LIT>" , "<STR_LIT>" , dest = "<STR_LIT>" , type = int , <EOL> help = "<STR_LIT>" ) <EOL> parser . add_option ( "<STR_LIT>" , "<STR_LIT>" , dest = "<STR_LIT>" , action = "<STR_LIT:store_true>" , <EOL> help = "<STR_LIT>" ) <EOL> parser . add_option ( "<STR_LIT>" , "<STR_LIT>" , dest = "<STR_LIT>" , type = int , <EOL> help = "<STR_LIT>" ) <EOL> parser . add_option ( "<STR_LIT>" , "<STR_LIT>" , dest = "<STR_LIT>" , <EOL> help = "<STR_LIT>" ) <EOL> parser . add_option ( "<STR_LIT>" , "<STR_LIT>" , dest = "<STR_LIT>" , default = '<STR_LIT>' , <EOL> help = "<STR_LIT>" ) <EOL> options , args = parser . parse_args ( ) <EOL> options . num_samples = interpolate_config ( options . num_samples , <EOL> options . profile , '<STR_LIT>' , type = int ) <EOL> options . weighted = interpolate_config ( options . weighted , <EOL> options . profile , '<STR_LIT>' , type = bool , default = False ) <EOL> options . field = interpolate_config ( options . field , options . profile , <EOL> '<STR_LIT>' , type = int , default = False ) <EOL> options . delimiter = interpolate_config ( options . delimiter , options . profile , <EOL> '<STR_LIT>' , default = '<STR_LIT:U+0020>' ) <EOL> return AttrDict ( options . __dict__ ) , args <EOL> def logsample ( fh , num_samples , ** kwargs ) : <EOL> """<STR_LIT>""" <EOL> R = [ ] <EOL> N = num_samples <EOL> for i , k in enumerate ( fh ) : <EOL> if i < N : <EOL> R . append ( k ) <EOL> else : <EOL> r = randint ( <NUM_LIT:0> , i ) <EOL> if r < N : <EOL> R [ r ] = k <EOL> for record in R : <EOL> yield record . strip ( ) <EOL> def logsample_weighted ( fh , num_samples , field , delimiter , ** kwargs ) : <EOL> """<STR_LIT>""" <EOL> N = num_samples <EOL> delimiter = delimiter <EOL> field = field - <NUM_LIT:1> <EOL> R = [ ] <EOL> min_val = float ( "<STR_LIT>" ) <EOL> i = <NUM_LIT:0> <EOL> for line in fh : <EOL> w = int ( line . split ( delimiter ) [ field ] ) <EOL> if w < <NUM_LIT:1> : <EOL> continue <EOL> r = random ( ) <EOL> k = r ** ( <NUM_LIT:1.> / w ) <EOL> if i < N : <EOL> heappush ( R , ( k , line ) ) <EOL> if k < min_val : <EOL> min_val = k <EOL> else : <EOL> if k > min_val : <EOL> heapreplace ( R , ( k , line ) ) <EOL> i += <NUM_LIT:1> <EOL> for key , record in R : <EOL> yield key , record . strip ( ) <EOL> def logsample_main ( ) : <EOL> """<STR_LIT>""" <EOL> options , args = logsample_parse_args ( ) <EOL> if options . weighted is True : <EOL> for k , r in logsample_weighted ( fh = sys . stdin , * args , ** options ) : <EOL> print r <EOL> else : <EOL> for r in logsample ( fh = sys . stdin , * args , ** options ) : <EOL> print r <EOL> return <NUM_LIT:0> </s>
