I have written simple function to cut lines in txt file, takes 3 arguments :
cut(inicial_line, final_line, file)
now how do i put inicial_line and final_line to -c option to execute it for example:
$ python cut.py -c 5 8 f.txt
and it print file text from 5th to 8th line
i found solution
__name__=='__main__': import argparse import sys pars = argparse.ArgumentParser() pars.add_argument('-n', nargs=2, type=int) args=pars.parse_args(sys.argv[1:4]) print cut(args.n[0], args.n[1], sys.argv[4])
main problem was args=pars.parse_args(sys.argv[1:4])
i didnt know that args=pars.parse_args() is the same as args=pars.parse_args(sys.argv[1:])
import sys; print(sys.argv)should get you started...argparsemodule: docs