使用wheel文件的python Pip安装不起作用

Question

Due to network constraints and certificates error I am not able to install python libraries using pip normally.

So I tried downloading .whl and install the library manually. However it also failed with the same error.

C:\python3.7>python -m pip install requests-2.21.0-py2.py3-none-any.whl
Processing c:\python3.7\requests-2.21.0-py2.py3-none-any.whl
Collecting idna<2.9,>=2.5 (from requests==2.21.0)
  Retrying (Retry(total=4, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x039C3D90>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/idna/
  Retrying (Retry(total=3, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x04567350>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/idna/
  Retrying (Retry(total=2, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x04567D10>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/idna/
  Retrying (Retry(total=1, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x04567FD0>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/idna/
  Retrying (Retry(total=0, connect=None, read=None, redirect=None, status=None)) after connection broken by 'NewConnectionError('<pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at 0x04545F70>: Failed to establish a new connection: [Errno 11001] getaddrinfo failed')': /simple/idna/
  Could not find a version that satisfies the requirement idna<2.9,>=2.5 (from requests==2.21.0) (from versions: )
No matching distribution found for idna<2.9,>=2.5 (from requests==2.21.0)

Tried --use-wheel option as suggested but doesn't work. Looks like pip is old, however I can't even upgrade pip because that also needs a proper working net. It's a catch22 situation.

C:\python3.7>python -m pip install --use-wheel requests-2.21.0-py2.py3-none-any.whl

Usage:
  C:\python3.7\python.exe -m pip install [options] <requirement specifier> [package-index-options] ...
  C:\python3.7\python.exe -m pip install [options] -r <requirements file> [package-index-options] ...
  C:\python3.7\python.exe -m pip install [options] [-e] <vcs project url> ...
  C:\python3.7\python.exe -m pip install [options] [-e] <local project path> ...
  C:\python3.7\python.exe -m pip install [options] <archive url/path> ...

no such option: --use-wheel

How can I manually install libraries?

Answer 1

The issue is not your wheel, that works. But this line is important:

No matching distribution found for idna<2.9,>=2.5 (from requests==2.21.0)

So you would need to download idna as well. Probably other dependencies as well.

$ python -m pip show requests
Requires: urllib3, chardet, idna, certifi

So you'll need those four as well. To be honest, I think you'll have a lot of difficulty trying to accomplish this all manually. The dependency tree might be several levels deep.

Answer 2

On the machine with working pip , issue:

$ mkdir wheelhouse
$ pip download --dest wheelhouse requests

This will download requests and all its dependencies to the wheelhouse directory. Now move the directory to the target machine, there issue

$ pip install requests --no-index --find-links wheelhouse/

This will tell pip to not to search for packages online and instead look for them in the wheelhouse directory ("offline" install).