black不会遵守对长import语句的行长度限制

Question

考虑下面的import语句：

from modeling.estimation.performance_analysis.monte_carlo.least_squares.error_grids import BaseGrid

black (限制为80个字符/行)将其格式化为：

from modeling.estimation.performance_analysis.monte_carlo.least_squares.error_grids import (
    BaseGrid,
)

超过80个字符。任何使用\分解import语句的尝试都会被black撤消。

我怎样才能让黑人遵守80个字符的限制？

Answer 1

请尝试以下操作：

如果BaseGrid是一个函数：

package = "modeling.estimation.performance_analysis.monte_carlo.least_squares"
name = "error_grids"
BaseGrid = getattr(__import__(package, fromlist=[name]), name).BaseGrid

BaseGrid()

如果BaseGrid是python文件(拆分字符串以遵守行长度限制)：

p = "modeling.estimation.performance_analysis"
p2 = "monte_carlo.least_squares.error_grids"
name = "BaseGrid"
BaseGrid = getattr(__import__(p + '.' + p2, fromlist=[name]), name)

它使用__import__函数而不是import语句导入到变量中，并且应该等同于：

from modeling.estimation.performance_analysis.monte_carlo.least_squares.error_grids import BaseGrid as BaseGrid