Error in the program given in course

Question

This program in the course is giving error:
def function(variable):
variable += 1
print(variable)

function(7)
print(variable)

Answer 1

you didn't save the value 7 in any variable so ofc when the scope of the function ends, you can't use the variable which you used in that function.

Answer 2

Okay now. Try it like this.

def function(variable):
variable += 1
print(variable)

variable = 7
function(variable)
print(variable)