Python的换行符 “以X1为Y1，X2为Y2，X3为Y3” 声明

Question

我想打破长的语句，如：

with X1() as y1, X2() as y2, X3() as y3: # Really long line 
    # Do something 

我曾尝试：

with (
    X1() as y1, 
    X2() as y2, 
    X3() as y3): 
    # Do something 

但这是一个语法错误。看来，以下的作品，但我发现它比较难读：

with X1(
    ) as y1, X2(
    ) as y2, X3(
    ) as y3: 
    # Do something 

有没有对如何最好地格式化长with声明这样有什么建议？谢谢。

Answer 1

with X1() as y1, \ 
    X2() as y2, \ 
    X3() as y3: 

试试看。我认为将个别陈述作为一条线是重要的。反斜杠有助于保持Python的显式>隐式样式。

此处参考：https://www.python.org/dev/peps/pep-0008/