在 python 中，后台究竟发生了什么使得 "x = 1j" 有效，但 "x = 1*j" 抛出错误？
In python, what exactly is going on in the background such that "x = 1j" works, but "x = 1*j" throws an error?
具体来说，如果我想定义一个对象，比如 z，这样
x = 1z
有效但
x = 1*z
failed 抛出一个错误，我将如何定义这样一个对象？
我不认为它涉及重载乘法运算符。
1j，之所以有效，是因为它是 literal for a Complex Number（您在问题标题中提到了 1j）。有点像 [] 是列表的文字。
这是 Python 文档/规范的相关摘录：
Imaginary literals are described by the following lexical definitions:
imagnumber ::= (floatnumber | intpart) ("j" | "J")
An imaginary
literal yields a complex number with a real part of 0.0. Complex
numbers are represented as a pair of floating point numbers and have
the same restrictions on their range. To create a complex number with
a nonzero real part, add a floating point number to it, e.g., (3+4j).
换句话说，1j 是一个特例，您无法使 1z 像 1j 那样工作。 1z 是一个 SyntaxError，仅此而已（就 Python 而言，就是这样）。
具体来说，如果我想定义一个对象，比如 z，这样
x = 1z
有效但
x = 1*z
failed 抛出一个错误，我将如何定义这样一个对象？
我不认为它涉及重载乘法运算符。
1j，之所以有效，是因为它是 literal for a Complex Number（您在问题标题中提到了 1j）。有点像 [] 是列表的文字。
这是 Python 文档/规范的相关摘录：
Imaginary literals are described by the following lexical definitions:
imagnumber ::= (floatnumber | intpart) ("j" | "J")An imaginary literal yields a complex number with a real part of 0.0. Complex numbers are represented as a pair of floating point numbers and have the same restrictions on their range. To create a complex number with a nonzero real part, add a floating point number to it, e.g.,
(3+4j).
换句话说，1j 是一个特例，您无法使 1z 像 1j 那样工作。 1z 是一个 SyntaxError，仅此而已（就 Python 而言，就是这样）。