if语句用户交互字符串
字符串
字符串相加
a = "alex"
b = "wusir"
prin("a+b")
字符串相乘
a = "alex"
print(a*3)
用户交互
import getpass
name = input("请输入你的用户名:")
password = getpass.getpass("请输入你的密码:") #只能在cmd中运行
print(password)
if语句
if 3>2:
print("yes")
if 3>1
print("yes too")
a = int(input("输入一个数:"))
if a>2:
print("hello")
else:
print("hello world")
age =20
if age < 18:
print("too young")
elif age < 30 and age >18:
print("也不小了")
else:
print("还能折腾几年啊")
if 50>0:
print(666)
if 20>0:
print(6666)
if 10>0:
print(66666)
else:
pass