참조) https://wikidocs.net/39

import os

def search(dirname):
    try:
        filenames = os.listdir(dirname)
        for filename in filenames:
            full_filename = os.path.join(dirname, filename)
            if os.path.isdir(full_filename):
                search(full_filename)
            else:
                ext = os.path.splitext(full_filename)[-1]
                if ext == '.py': 
                    print(full_filename)
    except PermissionError:
        pass

search("c:/")

혹은

import os

for (path, dir, files) in os.walk("c:/"):
    for filename in files:
        ext = os.path.splitext(filename)[-1]
        if ext == '.py':
            print("%s/%s" % (path, filename))

참조) https://gmlwjd9405.github.io/2019/04/22/javascript-hoisting.html

Compile Phase 1 에서 선언이 필요한 부분을 검색하는 것을 말한다.

참조) https://blog.lxf.kr/2018-11-19---why-or-not-django/