[PYTHON] Erreur de proxy lors de l'exécution de "pip install"

Nous partagerons l'erreur et la solution survenues lors de la mise à niveau de la bibliothèque pip sur le PC (Windows10) au travail. Cela semble se produire lors de l'accès à Internet.

environnement

• Windows 10 Pro 1903
• Python 3.8.0
• pip 19.2.3

Contexte

J'ai essayé de mettre à niveau la bibliothèque pip sur mon PC de travail, mais j'ai eu l'erreur suivante et je n'ai pas pu mettre à niveau.

$ python -m pip install --upgrade pip
ERROR: Exception:
Traceback (most recent call last):
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\cli\base_command.py", line 188, in main
    status = self.run(options, args)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\commands\install.py", line 345, in run
    resolver.resolve(requirement_set)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\legacy_resolve.py", line 196, in resolve
    self._resolve_one(requirement_set, req)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\legacy_resolve.py", line 359, in _resolve_one
    abstract_dist = self._get_abstract_dist_for(req_to_install)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\legacy_resolve.py", line 297, in _get_abstract_dist_for
    skip_reason = self._check_skip_installed(req)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\legacy_resolve.py", line 267, in _check_skip_installed
    self.finder.find_requirement(req_to_install, upgrade=True)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\index.py", line 1200, in find_requirement
    candidates = self.find_candidates(
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\index.py", line 1183, in find_candidates
    candidates = self.find_all_candidates(project_name)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\index.py", line 1128, in find_all_candidates
    for page in self._get_pages(url_locations, project_name):
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\index.py", line 1282, in _get_pages
    page = _get_html_page(location, session=self.session)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\index.py", line 234, in _get_html_page
    resp = _get_html_response(url, session=session)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\index.py", line 165, in _get_html_response
    resp = session.get(
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_vendor\requests\sessions.py", line 546, in get
    return self.request('GET', url, **kwargs)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_internal\download.py", line 624, in request
    return super(PipSession, self).request(method, url, *args, **kwargs)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_vendor\requests\sessions.py", line 523, in request
    settings = self.merge_environment_settings(
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_vendor\requests\sessions.py", line 700, in merge_environment_settings
    env_proxies = get_environ_proxies(url, no_proxy=no_proxy)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_vendor\requests\utils.py", line 761, in get_environ_proxies
    if should_bypass_proxies(url, no_proxy=no_proxy):
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_vendor\requests\utils.py", line 745, in should_bypass_proxies
    bypass = proxy_bypass(parsed.hostname)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_vendor\requests\utils.py", line 95, in proxy_bypass
    return proxy_bypass_registry(host)
  File "C:\Users\yuya_sato\AppData\Local\Programs\Python\Python38\lib\site-packages\pip\_vendor\requests\utils.py", line 60, in proxy_bypass_registry
    proxyEnable = int(winreg.QueryValueEx(internetSettings,
ValueError: invalid literal for int() with base 10: ''

Solution

Ouvrez Registry Editor et changez le type de HKEY_CURRENT_USER \ Software \ Microsoft \ Windows \ CurrentVersion \ Internet Settings \ ProxyEnable en REG_BINARY.

finalement

Je ne connais pas très bien ce domaine, donc on ne sait toujours pas pourquoi cette solution fonctionne. Cependant, comme cette erreur se produit fréquemment, j'ai écrit un article comprenant la signification de l'enregistrement pour moi-même.

D'ailleurs, cela ne s'est jamais produit sur un PC privé (Mac OS).