comparison contrib/import-checker.py @ 20197:761f2929a6ad

import-checker: refactor sys.path prefix check (issue4129)

This patch refactors the logic in contrib/import-checker.py responsible for
checking the beginnings of the paths in sys.path.  In particular, it adds a
variable that defines the set of allowed prefixes.

The primary purpose of this change is to make it easier to add more allowed
prefixes.  This will be useful in resolving issue4129, which involves making
the function list_stdlib_modules() work when run from a virtualenv.

20196:59198508b0bd

        yield m
    # These get missed too
    for m in 'ctypes', 'email':
        yield m
    yield 'builtins' # python3 only
    for libpath in sys.path:
        # We want to walk everything in sys.path that starts with
        # either sys.prefix or sys.exec_prefix.
        if not (libpath.startswith(sys.prefix)
                or libpath.startswith(sys.exec_prefix)):
            continue
        if 'site-packages' in libpath:
            continue
        for top, dirs, files in os.walk(libpath):
            for name in files:

20197:761f2929a6ad

        yield m
    # These get missed too
    for m in 'ctypes', 'email':
        yield m
    yield 'builtins' # python3 only
    stdlib_prefixes = set([sys.prefix, sys.exec_prefix])
    for libpath in sys.path:
        # We want to walk everything in sys.path that starts with something
        # in stdlib_prefixes.
        for prefix in stdlib_prefixes:
            if libpath.startswith(prefix):
                break
        else:
            continue
        if 'site-packages' in libpath:
            continue
        for top, dirs, files in os.walk(libpath):
            for name in files: