C:\Users\Mina>pip install sklearn
Collecting sklearn
Retrying (Retry(total=4, connect=None, read=None, redirect=None, 
status=None)) after connection broken by 
'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read 
timed out. (read timeout=15)",)': /simple/sklearn/
Retrying (Retry(total=3, connect=None, read=None, redirect=None, 
status=None)) after connection broken by 
'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read 
timed out. (read timeout=15)",)': /simple/sklearn/
Retrying (Retry(total=2, connect=None, read=None, redirect=None, 
status=None)) after connection broken by 
'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read 
timed out. (read timeout=15)",)': /simple/sklearn/
Retrying (Retry(total=1, connect=None, read=None, redirect=None, 
status=None)) after connection broken by 
'ReadTimeoutError("HTTPSConnectionPool(host='pypi.org', port=443): Read 
timed out. (read timeout=15)",)': /simple/sklearn/
Retrying (Retry(total=0, connect=None, read=None, redirect=None, 
status=None)) after connection broken by