第7章 用户输入和while循环

Posted 2021-03-12 dingdangsunny

input()函数
input()让程序暂停使用，等待用户输入一些文本。
获取用户输入后，Python将其存储在一个变量中，以方便后续使用

message = input("Tell me something, and I will repeat it back to you: ")
print(message)

输出
Tell me something, and I will repeat it back to you: Hello everyone!
Hello everyone!

height = input("How tall are you, in inches? ")
height = int(height)#int()用于将获取的输入转换为整型数格式
if height >= 36:
print("
You‘re tall enough to ride! ")
else:
print("
You‘ll be able to ride when you‘re a little older. ")

while循环

number = 1
while number <= 5:
print(number)
number += 1

遇到break，立即跳出循环
遇到continue，结束本次循环，进入下一次循环

使用用户输入来填充字典
responses = {}
设置一个标志位，指出调查是否继续

polling_active = True
while polling_active:
name = input("
What is your name? ")
response = input("Which mountain would you like to climb someday? ")
responses[name] = response
repeat = input("Would you like to let another person respond?(yes/no)")
if repeat =="no":
polling_active = False
print("
--- Poll Result ---")
for name, response in responses.items():
print(name.title() + "would like to climb" + response + ".")