##
#  scope1.py
#
#  Stephanie Taylor
#  Sep 25, 2023
#
# Demonstrates that Python has file-level scope and function-level scopre
# and that within a function, we can only read the file-level scope variable (can't write to it)
# and we can't mix file-level and function-level references to variables with the same name in the same function
##

file = 0

def change_file():
    ''' This function is called change_file, but it won't do so
    '''
    print(file) # Can't have a reference to the file -level var before make a function-level var
    file = 1 # makes a new function-level var
    print(file) # but this one works
    
print(file)
change_file()
print(file)