CODEWITHSUNDEEP
pythonscala
Daniel
Daniel

Reputation: 6039

Scala: system commands to a python script with arguments

So I am sending this system command in Scala: 

val command = "python other/evaluateAnswers.py 'chemistry earth' 'the chemistry of the world in champaign' 'the chemistry of the computer science world'"

command.!!

Here is a simplified version of my python code: 

def main(argv):
    # example run:
    print(argv)
    # do stuff here ... 

if __name__ == '__main__':
    main(sys.argv[1:])

If I run this directly inside terminal:

daniel$ python other/evaluateAnswers.py 'chemistry earth' 'the chemistry of the world in champaign' 'the chemistry of the computer science world'

Here is the result of print(argv) in my python code: 

['chemistry earth', 'the chemistry of the world in champaign', 'the chemistry of the computer science world']

which is correct.

While if I run this from scala via command.!! I'd get the following in the output of print(argv): 

["'chemistry", "earth'", "'the", 'chemistry', 'of', 'the', 'world', 'in', "champaign'", "'the", 'chemistry', 'of', 'the', 'computer', 'science', "world'"]

which is incorrect splitting.

Any ideas where I'm going wrong?

Upvotes: 3

Views: 437

Answers (1)

Daniel
Daniel

Reputation: 6039

Manually splitting my scala command did the trick: 

val command = Seq("python", "other/evaluateAnswers.py", "'chemistry earth'", "'the chemistry of the world in champaign'", "'the chemistry of the computer science world'")
command.!!

Upvotes: 2

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