SUJET :

python3.5 -m pip list

# télécharger le script
curl "https://bootstrap.pypa.io/get-pip.py" -o "get-pip.py" 
# forcer l'installation
sudo -H python3.5 get-pip.py
# rafraichir pip pour être sur
sudo -H python3.5 -m pip install -U pip

$ python3.5 -m pip list
/usr/local/bin/python3.5: No module named pip

$ curl "https://bootstrap.pypa.io/get-pip.py" -o "get-pip.py" 
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 1669k  100 1669k    0     0  6253k      0 --:--:-- --:--:-- --:--:-- 6230k

$ sudo -H python3.5 get-pip.py
WARNING: pip is configured with locations that require TLS/SSL, however the ssl module in Python is not available.
Collecting pip
  WARNING: Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/pip/
  WARNING: Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/pip/
  WARNING: Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/pip/
  WARNING: Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/pip/
  WARNING: Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)': /simple/pip/
  Could not fetch URL https://pypi.org/simple/pip/: There was a problem confirming the ssl certificate: HTTPSConnectionPool(host='pypi.org', port=443): Max retries exceeded with url: /simple/pip/ (Caused by SSLError("Can't connect to HTTPS URL because the SSL module is not available.",)) - skipping
  ERROR: Could not find a version that satisfies the requirement pip (from versions: none)
ERROR: No matching distribution found for pip