CODEWITHSUNDEEP
pythonimport
PTN
PTN

Reputation: 1692

Import function only in another file

So in my file1.py, I have something like:

def run():
   # Do something

print "Hi"

Now I want to use function run() in another file. 

from file1.py import run

However, when I execute the other file it also prints Hi. How do I suppress this?

Upvotes: 1

Views: 53

Answers (3)

A.Alcina
A.Alcina

Reputation: 11

You should include after the functions this:

this runs the program

if main == "name":# before and after 'main' and 'name' there are two under_scores! print "hi" etc...

Upvotes: 1

Dimitris Fasarakis Hilliard
Dimitris Fasarakis Hilliard

Reputation: 160677

Add the print "Hi" in an if __name__ == "__main__" clause.

When python imports modules it executes the code contained in them in order to build the module namespace. If you run the module as the main script the __name__ is going to get assigned to __main__ and the code inside the if clause is going to get executed.

Since you're not running the script as the main script the __name__ gets assigned to the modules __name__ (in this case file1) and as a result this test will not succeed and the print statement is not going to get executed.

def run():
   # Do something

if __name__ == "__main__":
    print "Hi"

Upvotes: 2

user1269942
user1269942

Reputation: 3852

if you don't want Hi to be printed, simply delete from your file1.py

if you want Hi to be printed when run() is called, then indent it so that it belongs to the run() function.

Upvotes: 0

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