How to make a variable which is available in an if statement be available in an else statement in python?

Question

if(1 == 2):
... a = 1
... b = 1
... c = a - b
... else:
... print(c + 1)
...

#whenever it executes the else statement I get c is not defined

Answer 1

It runs fine when I run it.

Answer 2

you have to define c before the if/else statement

c= 0

if ... :
#something with c
else:
# something with c