山渣油,sns网站有哪些,搜源码
标准示例:
your_name = 'jack ma'
示例:
arvin_age = 18
例:
# the idle boy is almost invariably poor and anxious. 单行注释 ''' 这是多行注释示范 ''' """ 多行注释示范 """
your_id = input("input your id identifier: ") your_pwd = input("input your password: ") print("your id is {}, your password is {}".format(your_id, your_pwd)) 运行结果: input your id identifier: jack input your password: default your id is jack, your password is default
单if条件判断
if 条件: #条件判断 > < ==
print(‘真实’) #条件成立则执行
if 10 > 8: print("you are right.")
if else条件判断
if 10 > 20: print("10 is bigger than 2.") else: print("10 is smaller than 2.")
if elif elif else 条件判断
a = "jack" if 10 > 50: print("10 is bigger than 5.") elif type(a) == "str": print("a is a string.") elif 20 == 20: print("20 is equal 20.") else: print("all of them are false.") 运行结果: 20 is equal 20.
多个同级if语句
a = "jack" if 10 == 20: print("10 is equal 20.") if a == "jack": print(a ,"is the same as jack.") if 10 == 10: print("10 is equal 10.") 运行结果: jack is the same as jack. 10 is equal 10.
if与if语句之间的嵌套
id = int(input("input your id number: ")) pwd = input("input your passwrd: ") if id == 9: print("go on.") if pwd == "default": print("you logged in successfully.") else: print("your password is incorrect.") else: print("your id was typed incorrectly.")
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