Calling python function from shell script

Question

Can some one help me with the syntax, how to call 'x' function from a shell script. The challenge here is, from shell script need to pass a,b dynamically.

your suggestion greatly appreciated.

Python Code:

def x(a,b):
    '''x(a,b) --> [a,b]'''
    return [a,b]

def add(a,b):
    '''add(a,b) --> a+b'''
    return a+b

def test():
    '''test code for all modules'''
    print "testing x..."
    print x(1,2)
    print x('a','b')
    print x([1,2,3],[4,5,6])
    print "testing add..."
    print add(1,2)
    print add('a','b')
    print add([1,2,3],[4,5,6])
    return

@MadPhysicist, but that answer is old and not Python3 compliant — John La Rooy, Dec 08 '15 at 21:19
@JohnLaRooy this isn't a Python3 question, and `$ python` on *nix should always run python2. If you'd like to update the answer, do so on the duplicate. — Adam Smith, Dec 08 '15 at 21:25
@AdamSmith, Arch linux already defaults to python3 and Ubuntu 16.04 is planning to move away from python2.., PEP0394 says "for the time being..." — John La Rooy, Dec 08 '15 at 21:35
@JohnLaRooy is that so? Awesome! Python2 has been a long-rotting corpse as far as I'm concerned. — Adam Smith, Dec 08 '15 at 23:21

score 5 · Accepted Answer · answered Dec 08 '15 at 21:14

5

If you save the file foo.py, you can run this from the shell

python -c "import foo; print(foo.x(1, 2))"

The result can be read from stdout.

answered Dec 08 '15 at 21:14

John La Rooy

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thanks for response.. But I need to pass the param dynamically . Like python -c "import foo; print(foo.x(${var1}, ${var2}))" – SVN Dec 08 '15 at 22:19
So do that. What is stopping you? – Mad Physicist Dec 09 '15 at 03:58
This is not working on our Red Hat Enterprise Linux Server release 5.11, please help me to identify the alternative – SVN Dec 18 '15 at 19:47

Calling python function from shell script

1 Answers1