python如何构造字符串

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构造字符串

你会经常需要打印字符串。要是有很多变量，避免下面这样：

name = "Raymond" age = 22 born_in = "Oakland, CA" string = "Hello my name is " + name + "and I'm " + str(age) + " years old. I was born in " + born_in + "." print(string)

额，这看起来多乱呀？你可以用个漂亮简洁的方法来代替， .format 。

这样做：

name = "Raymond" age = 22 born_in = "Oakland, CA" string = "Hello my name is {0} and I'm {1} years old. I was born in {2}.".format(name, age, born_in) print(string)

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