"Ambiguous Class Definition" 用于类名 "I"(Python 中的 Pep8)

"Ambiguous Class Definition" for classname "I" (Pep8 in Python)

问题: 为什么当我尝试定义名称 I 的 class 时 PEP8 会发出警告 PEP8: amiguous class definition 'I'?我找不到任何内置 I.

mwe.py:

class I:
    pass

备注:

根据PEP 8: Names to avoid

Never use the characters 'l' (lowercase letter el), 'O' (uppercase letter oh), or 'I' (uppercase letter eye) as single character variable names.

In some fonts, these characters are indistinguishable from the numerals one and zero. When tempted to use 'l', use 'L' instead.