Python：如何调用字符串中的值？ [重复]

Question

我是Python新手。在下面的代码（或参见附件）中，我想调用程序最后一步中字符串内输入的所有数字。我该怎么办？

print "how old are you?",
age = raw_input()
print "how tall are you?",
height = raw_input()

print = (expected outcome: You're X old, X tall, etc.)

Answer 1

我更喜欢的一种简单方法是使用字符串格式化运算符，如下所示：

>>> age = 10
>>> height = 72
>>> print "you're %s years old and %s cm tall" % (age, height)
you're 10 years old and 72 cm tall
>>>

Answer 2

酷！，欢迎使用 python 编码！，有很多方法可以做你想做的事情，我将向你展示一种，但请随意寻找另一种

print "how old are you?",
age = raw_input()
print "how tall are you?",
height = raw_input()

print("You're " + age + " old, " + height + " tall, etc.")

额外：您可以向

raw_input

添加参数，使其类似于：

age = raw_input("how old are you?")
height = raw_input("how tall are you?")

print("You're " + age + " old, " + height + " tall, etc.")

Answer 3

您可以打印任意数量的内容，例如：

print "You're", age, "years old and", height, "centimeters tall"

或者你可以使用字符串格式

print "You're {} years old and {} centimeters tall".format(age,height)

示例

>>> age=29
>>> height=160
>>> print "You're", age, "years old and", height, "centimeters tall"
You're 29 years old and 160 centimeters tall
>>> print "You're {} years old and {} centimeters tall".format(age,height)
You're 29 years old and 160 centimeters tall
>>> 

有几种方法可以做到这一点，如其他答案和评论中所示，我最喜欢的是字符串格式

此外，如果您需要将这些输入转换为数字以对其进行数学运算，请相应地使用

int

或

float

x = int(raw_input("write a number: "))

此外，当你学习 python 时，我建议从最新版本 python 3.5 开始，如果需要，你可以稍后调整到旧版本