Creating and importing a module
If you have some functions that you use often, you can collect them in a module.
def f1(n): return n + 1
How to use it (
#!/usr/bin/env python import mymodule print mymodule.f1(5) # => 6 print mymodule.__name__ # => mymodule (note that .py is missing)
It is also possible to add some testing code to a module:
#!/usr/bin/env python def f1(n): return n + 1 if __name__ == "__main__": number = 1977 print f1(number) # => 1978
Now, you can still import it like in
use-mymodule.py, or you can launch it as if it were a standalone script. In the latter case the test suite will be executed. If you import it, the test suite is not executed. A test suite is a good practice to be sure that the module is working as expected.