Python是一种广泛使用的编程语言，提供了大量内置模块与函数。其中，complex函数可用于将数字或字符串转换为复数形式。当第一个参数为字符串时，系统会将其直接解析为复数，此时不可提供第二个参数；而第二个参数本身也不允许是字符串类型。本文将详细 ...

In this example, we imported the math library. We evaluated math.pi to see one of the constants defined in this library. We evaluated .The result was almost (but not exactly) 1/2. This also shows us ...