First part: import section
Second part: functions' definitions
Third part: if module name is '__main__' it is script
if statement - if __name__ == '__main__':
Fourth part: executable part
print(f'before if statements __name__ is: {__name__}')
print(f'before if statements __file__ is: {__file__}')
if __name__ == '__main__':
print(f'after if statements __name__ is: {__name__}')
print(f'after if statements __file__ is: {__file__}')