input和while循环——Python编程从入门到实践

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

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

name = input("Please enter your name: ")
print("Hello, " + name + "!")

Please enter your name: hery
Hello, hery!

prompt = "If you tell us who you are, we can personalize the messages you see."
prompt += 'nWhat is your name? '
name = input(prompt)
print("nHello, " + name + "!")

age = input("How old are you? ")
print(type(age))

How old are you? 12
<class 'str'>

height = input("How tall are you, in inches? ")
height = int(height)
if height >= 36:
    print("nYou're tall enough to ride!")
else:
    print("nYou'll be able to ride when you're a little older.")

number = input("Enter a number, and I'll tell you if it is even or odd: ")
number = int(number)
if number % 2 == 0:
    print('nThe number ' + str(number) + ' is even.')
else:
    print('nThe number ' + str(number) + ' is odd.')

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

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prompt = "nTell me something , and I will repeat it back to you:"
prompt += "nEnter 'quit' to end the program. "
message = ''
while message != 'quit':
    message = input(prompt)
    print(message)

Tell me something , and I will repeat it back to you: 
Enter 'quit' to end the program. Hello Python
Hello Python

Tell me something , and I will repeat it back to you: 
Enter 'quit' to end the program. Hello 0629
Hello 0629

Tell me something , and I will repeat it back to you: 
Enter 'quit' to end the program. quit
quit

prompt = "nTell me something , and I will repeat it back to you:"
prompt += "nEnter 'quit' to end the program. "
message = ''
while message != 'quit':
    message = input(prompt)
    if message != 'quit':
        print(message)

prompt = "nTell me something , and I will repeat it back to you:"
prompt += "nEnter 'quit' to end the program. "

active = True
while active:
    message = input(prompt)

    if message == 'quit':
        active = False
    else:
        print(message)

prompt = "nPlease enter the name of a city you have visited:"
prompt += "n(Enter 'quit' when you are finished.) "

while True:
    city = input(prompt)

    if city == 'quit':
        break
    else:
        print("I'd love to go to " + city.title() + "!")

current_number = 0
while current_number < 10:
    current_number += 1
    if current_number % 2 == 0:
        continue
    else:
        print(current_number)

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