Question

由于网络限制和证书错误，我无法正常使用pip安装python库。

因此，我尝试下载.whl并手动安装该库。但是，它也因相同的错误而失败。

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)

尝试使用--use-wheel选项，但不起作用。点子看起来很旧，但是我什至不能升级点子，因为那还需要一个合适的工作网。这是一个问题。

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

如何手动安装库？

Answer 1

问题不在于您要解决的问题。但是这一行很重要：

找不到IDna <2.9，> = 2.5的匹配分布（来自请求== 2.21.0）

因此，您还需要下载idna。可能还有其他依赖性。

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

所以您同样需要这四个。老实说，我想您将很难手动完成所有这些工作。依赖关系树可能有几个层次。

Answer 2

在运行pip的计算机上，发出：

$ mkdir wheelhouse
$ pip download --dest wheelhouse requests

这会将requests及其所有依赖项下载到wheelhouse目录。现在将目录移动到目标计算机，出现问题

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

这将告诉pip不要在线搜索软件包，而要在wheelhouse目录中寻找它们（“离线”安装）。

使用wheel文件的python Pip安装不起作用

2 个答案: