Pylint无效的常量名称 [英] Pylint invalid constant name

问题描述

我收到有关我的常量的Pylint错误： MIN_SOIL_PARTICLE_DENS （无效名称）。
为什么这个常数是错误的？这是我的全部功能：

I'm receiving a Pylint error regarding my constant: MIN_SOIL_PARTICLE_DENS (invalid name). Any ideas why this constant is wrong? Here's my full function:

def bulk_density(clay, sand, organic_matter):
    MIN_SOIL_PARTICLE_DENS = 2.65
    x1 = (0.078 + 0.278 * sand + 0.034 * clay + 0.022 * organic_matter - 0.018
          * sand * organic_matter - 0.027 * clay * organic_matter - 0.584 * sand
          * clay)
    x2 = -0.107 + 1.636 * x1
    field_capacity = vol_water_content_33_j_kg(clay, sand, organic_matter)#m3/m3
    sat_water_content = 0.043 + field_capacity + x2 - 0.097 * sand
    return (1 - sat_water_content) * MIN_SOIL_PARTICLE_DENS

推荐答案

检查名称时，Pylint区分常量，变量，类等。不在函数/类内的任何名称都将被视为常量，其他任何东西都将是变量。

When checking names, Pylint differentiates between constants, variables, classes etc. Any name that is not inside a function/class will be considered a constant, anything else is a variable.

请参见 http://docs.pylint.org/features.html#basic-checker

变量rgx：

[a-z _] [a-z0-9 _] {2,30} $

const-rgx：

（（[[A-Z _] [A-Z0 -9 _] *）|（__。* __））$

const-rgx:
(([A-Z_][A-Z0-9_]*)|(__.*__))$

因为您在函数， MIN_SOIL_PARTICLE_DENS 应该是变量（根据pylint），但是pylint将其视为常量，因此会抱怨。

Because you're in a function, MIN_SOIL_PARTICLE_DENS is (according to pylint) supposed to be a variable, pylint however treats it as a constant and therefore complains.

这意味着您不能在函数中使用任何大写名称，而不会受到pylint的抱怨。

This means you can't have any uppercase names inside functions without pylint complaining.

如果您问我，使用大写内部函数就可以了；并非所有常量都必须全局定义。

If you ask me, using uppercase inside functions is fine; not all constants are necessarily defined globally.

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