zip 函式

功能：把兩個或多個可迭代的物件聚合起來
1.物件

usernames = ["Bob", "Steven", "Sam"]
passwords = ("123", "321", "555")

user =zip(usernames, passwords)
for i in user:
    print(i)
    

('Bob', '123')
('Steven', '321')
('Sam', '555')

2.列表

usernames = ["Bob", "Steven", "Sam"]
passwords = ("123", "321", "555")

user =zip(usernames, passwords)
print( list(user))    

[('Bob', '123'),('Steven', '321'),('Sam', '555')]

3.字典

usernames = ["Bob", "Steven", "Sam"]
passwords = ("123", "321", "555")

user =zip(usernames, passwords)
user_dict = dict(user)
print(user_dict)

{('Bob', '123'),('Steven', '321'),('Sam', '555')}

輸入兩個以上元素時不能直接轉型成列表或是字典

if name == 'main'

開始前準備兩個檔案：模組1、模組2
模組1:

import moudle2
moudle2.hello()
print("模組1 __name__:" + __name__)
if __name__ == '__main__':
    print('模組1 __name__ == __main__')
    

模組2 __name__: moudle2
hello
模組1 __name__: moudle1
模組2 __name__: __main__
模組2 __name__: == __main__

模組2:

print("模組2 __name__:" + __name__)
if __name__ == '__main__':
    print('模組2 __name__ == __main__')
    
def hello():
    print("hello")
    

模組2 __name__: __main__
模組2 __name__: == __main__