python入门小知识2

if语句小程序示例

1、

user_name = "wang"
password = 123
inp_user_name = input(">>:")
inp_password = int(input (">>:"))
if inp_user_name == user_name and inp_password == password:
    print("pass")
else:
    print("fail")

2、

score = int( input(">>:")) #将input字符串转换为整形，并赋值给score
if score > 90:
    print("A")  #print前加四个空格
elif score > 80:
    print("B")
elif score > 70:
    print("C")
elif score > 60:
    print("D")
else:
    print("Fail")