第三个构造函数采用了字符串“100”并创建了以10为基数的整数值(常见的十进制系统)。

The third constructor takes the string of characters "100" and creates an integer in base 10 (the familiar decimal system).

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Python支持不同进制的整型字符串文本—八进制、十进制(最明显的！)

Python supports string literals of integers of different bases-octal, decimal (obviously!), and hexadecimal-and now binary has been added.

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十进制格式，说它需要一个字符串？

Decimal Format, says it needs to be a string?

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