具有不同语句的列表理解示例

问题描述

如果我有下一个循环

a = 0
b = [1,2,3]

for x in b:
    print a + x
    a = x

是否有可能在列表理解中覆盖它?我的第一次尝试失败了:

is it possible to overwrite it in the list comprehension? My first attempt is fail:

a = 0
b = [1,2,3]
[[print a+x, a=x] for x in b]

    [[print a+x, a=x] for x in b]
          ^
SyntaxError: invalid syntax

推荐答案

有很多方法可以将其写为列表理解，但实际上不应该这样做.理解是面向表达式的编程，循环是副作用.

There are ways to write this as a list comprehension, but you really shouldn't. Comprehensions are for expression-oriented programming, loops are for side-effects.

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