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Top Forums Shell Programming and Scripting python code...convert to ksh or sh Post 302103917 by ghostdog74 on Monday 22nd of January 2007 10:09:17 AM
Old 01-22-2007
This Python script is very clear in what its supposed to do.

1) import random
This is a library to generate random numbers
In bash , you can use the RANDOM env variable
2)
Code:
NTRIALS = 10000
matches = 0

For these, they are the same as declaring shell variables
3)
Code:
for trial in range(NTRIALS): # Do a bunch of trials...
    taken = {} 
    for person in range(NPEOPLE): 
        day = random.randint(0, 365) 
        if day in taken:
            matches += 1 
            break # No need to look for more than one.
        taken[day] = 1

range(NTRIALS) will give you a range of values from 0 to 9999
so for trial in range(NTRIALs) is a for loop to generate these numbers. So this for loop will iterate 10000 times, starting from count 0.
matches+=1 is the same as matches = matches + 1, which in shell, you can use something like this (or other methods)
Code:
x=`echo "$x + 1" | bc`

taken = {} declares a dictionary, or a lookup table.
random.randint(0,365) will generate a random number in the range from 0 to 365. taken[day] = 1 means keep that random day number in the dictionary
with the value of 1.
taken will now contain for example:
Code:
taken = { 102:1 } # 102 generated from random.randint()

 

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PYTHON-CONFIG(1)					      General Commands Manual						  PYTHON-CONFIG(1)

NAME
python-config - output build options for python C/C++ extensions or embedding SYNOPSIS
python-config [ --prefix ] [ --exec-prefix ] [ --includes ] [ --libs ] [ --cflags ] [ --ldflags ] [ --extension-suffix ] [ --configdir ] [ --help ] DESCRIPTION
python-config helps compiling and linking programs, which embed the Python interpreter, or extension modules that can be loaded dynamically (at run time) into the interpreter. OPTIONS
--cflags print the C compiler flags. --ldflags print the flags that should be passed to the linker. --includes similar to --cflags but only with -I options (path to python header files). --libs similar to --ldflags but only with -l options (used libraries). --prefix prints the prefix (base directory) under which python can be found. --exec-prefix print the prefix used for executable program directories (such as bin, sbin, etc). --extension-suffix print suffix used for extension modules (including the _d modified for debug builds). --configdir prints the path to the configuration directory under which the Makefile, etc. can be found). --help print the usage message. EXAMPLES
To build the singe-file c program prog against the python library, use gcc $(python-config --cflags --ldflags) progr.cpp -o progr.cpp The same in a makefile: CFLAGS+=$(shell python-config --cflags) LDFLAGS+=$(shell python-config --ldflags) all: progr To build a dynamically loadable python module, use gcc $(python-config --cflags --ldflags) -shared -fPIC progr.cpp -o progr.so SEE ALSO
python (1) http://docs.python.org/extending/extending.html /usr/share/doc/python/faq/extending.html AUTHORS
This manual page was written by Johann Felix Soden <johfel@gmx.de> for the Debian project (and may be used by others). November 27, 2011 PYTHON-CONFIG(1)
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