I'm having trouble printing a return value in my main function

[RedSkeleton007]

I'm missing something very basic here. The following code:

#!/usr/bin/env python3
#QuickTest.py
def summ(numThree,numFour):
    result = numThree + numFour
    return result

def main():
    numThree = 3
    numFour = 4
    summ(numThree,numFour)
    print(result)

main()

Gives this error:

Error:
========== RESTART: I:/Python/Python36-32/SamsPrograms/QuickTest.py ==========
Traceback (most recent call last):
  File "I:/Python/Python36-32/SamsPrograms/QuickTest.py", line 13, in <module>
    main()
  File "I:/Python/Python36-32/SamsPrograms/QuickTest.py", line 11, in main
    print(result)
NameError: name 'result' is not defined
>>>

I was expecting it to print 7. What's wrong?

[wavic]

!/usr/bin/env python3
#QuickTest.py
def summ(numThree,numFour):
    result = numThree + numFour
    return result
 
def main():
    numThree = 3
    numFour = 4
    result = summ(numThree,numFour)
    print(result)
 
main()

summ returns a value but it is not assigned to anything. The 'result' variable is local to summ function and it exists as long as the function is running. However you can create another 'result' variable in main function which is local to main. Both are not in conflict.

[IAMK]

result is not a global variable. It is defined inside of summ(), but main() has no idea what it is. You either need to define it in main() and then pass it into summ(), or just define it globally.