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how to call a method with -- at runtime in python (like shell script) with run time arguments for example below file name is mathematics.py

class maths():
    pass

    def add(self, *args):
        sum = 0
        for x in args:
            sum = sum + x
        return sum

    def mult(self, *args):
        if args:
            mul = 1
            for x in args:
                mul = mul * x
            return mul
        else:
            return None
m = maths()
m.add(1,2,3,)
m.mult(1,2,3)

i would like to run this as : 

python mathematics.py --add 1 2 3
or 
python mathematics.py --mult 1 2 3
flux0987
  • 69
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1 Answers1

1

use 'optionParser' or 'sys' module

from optparse import OptionParser
parser = OptionParser()
parser.add_option('-m', "--mult",dest='mult' default='true')

(options, _args) = parser.parse_args()

options.mult is your arguments 

import sys
a1 = sys.argv[0]
a2 = sys.argv[1]
a3 = sys.argv[2]

a1 is your file name, a2 is your first argument, a2 is your second argument,

your arguments:python app.py port 8888

a1=app.py

a2=port

a3=8888

kommmy
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  • 4