Can any one help me out with python. Am using python 3.6 but some of my code is not working here is the code

Question

Def (my_function():
a =3
return a
else:
print (my_function())

And here is the result.
Call back resent error:

Answer 1

Wrong Def >> def
Else without if doesnt work

def my_function():
a = 3
return a
print my_function()