CODEWITHSUNDEEP
python
user2341103
user2341103

Reputation: 2433

calling a parameter in a different python module

I am trying to call Branchname defined in test.py from test1.py and running into following error,can anyone provide inputs?

test.py

import test1
import os
import sys
def main():
    #initialize global variables & read CMD line arguments
    global BranchName
    ScriptDir = os.getcwd()
    print ScriptDir
    BranchName  = sys.argv[1]
    print "BranchName"
    print BranchName
    #Update input file with external gerrits, if any
    print "Before running test1"
    test1.main()
    print "After running test1"

if __name__ == '__main__':
    main()

test1.py

import test
def main ():
    print test.BranchName

Running into following error

BranchName
ab_mr2
Before running test1
Traceback (most recent call last):
  File "test.py", line 18, in <module>
    main()
  File "test.py", line 14, in main
    test1.main()
  File "/local/mnt/workspace/test1.py", line 3, in main
    print test.BranchName
AttributeError: 'module' object has no attribute 'BranchName

Upvotes: 1

Views: 65

Answers (2)

Burhan Khalid
Burhan Khalid

Reputation: 174624

my goal is to print BranchName passed to test.py from test1.py

If this is your case, then your file names are reversed. Also, you aren't passing anything around (which you should, instead of playing with global).

In test1.py, calculate BranchName, and then pass it to the main method from test.

import os
import sys

import test

def main():
    ScriptDir = os.getcwd()
    print ScriptDir
    BranchName  = sys.argv[1]
    print "BranchName"
    print BranchName
    #Update input file with external gerrits, if any
    print "Before running test1"
    test.main(BranchName) # here I am passing the variable
    print "After running test1"

if __name__ == '__main__':
    main()

In test.py, you have simply:

def main(branch_name):
    print('In test.py, the value is: {0}', branch_name)

Upvotes: 1

TerryA
TerryA

Reputation: 59974

main() does not actually get called in your test.py, because __name__ != '__main__'.

If you print __name__, it is actually test.

This is a reason why many scripts have the if __name__ == '__main__', so if it is imported, the whole code isn't run.

To fix this, you have to do two things:

  • You can just remove the if __name__ == '__main__': in your test.py, and just replace it with main()

  • There is no need to import test1.py in your test. In doing so, this is actually running main() in your test1.py, and will thus raise an error because test.BranchName hasn't even been defined yet.

    • However, if you must import test1.py, you can actually put an if __name__ == '__main__' in there, so when you import it from test.py, it will not run.

Upvotes: 4

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