Refactor - remove re._compile?

Feature or enhancement

Proposal:

Here is re.compile:

>>> import re, inspect
>>> print(inspect.getsource(re.compile))
def compile(pattern, flags=0):
    "Compile a regular expression pattern, returning a Pattern object."
    return _compile(pattern, flags)

It just calls re._compile with the same arguments.

When it was introduced it looked like there was some benefit to having an "implementation hook" to swap in impl from sre_compile.py.

I think the benefit doesn't really exist anymore - it seems like there should be a slight performance improvement, and simpler tracebacks, to just move the body of _compile directly into compile.

Linked PRs

• gh-122357

从 Lib/re/init.py 开始，检查 re.compile 和 re._compile，以及 gh-122357 中的相关工作。确定是否可以在不改变行为的情况下移除实现钩子；完成的标准是冗余的间接层已被移除，并且正则表达式模块仍然正常工作。