Python（pip）-RequestsDependencyWarning：urllib3（1.9.1）或chardet（2.3.0）与支持的版本不匹配

Question

我发现了几页有关此问题的页面，但没有一个解决了我的问题。

即使我做了：

pip show

我得到：

/usr/local/lib/python2.7/dist-packages/requests/__init__.py:80: RequestsDependencyWarning: urllib3 (1.9.1) or chardet (2.3.0) doesn't match a supported version!
  RequestsDependencyWarning)
Traceback (most recent call last):
  File "/usr/bin/pip", line 9, in <module>
    load_entry_point('pip==1.5.6', 'console_scripts', 'pip')()
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 480, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2691, in load_entry_point
    return ep.load()
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2322, in load
    return self.resolve()
  File "/usr/local/lib/python2.7/dist-packages/pkg_resources/__init__.py", line 2328, in resolve
    module = __import__(self.module_name, fromlist=['__name__'], level=0)
  File "/usr/lib/python2.7/dist-packages/pip/__init__.py", line 74, in <module>
    from pip.vcs import git, mercurial, subversion, bazaar  # noqa
  File "/usr/lib/python2.7/dist-packages/pip/vcs/mercurial.py", line 9, in <module>
    from pip.download import path_to_url
  File "/usr/lib/python2.7/dist-packages/pip/download.py", line 22, in <module>
    import requests, six
  File "/usr/local/lib/python2.7/dist-packages/requests/__init__.py", line 90, in <module>
    from urllib3.exceptions import DependencyWarning
ImportError: cannot import name DependencyWarning

我做了什么 ：

pip install --upgrade chardet

但据解释，它给了我同样的错误。

所以我做了 ：

sudo apt remove python-chardet

并释放他所有的依赖。重新安装后->相同：’（

我也做了同样的事情python-pip。重新安装后->相同。
以下是有关的行urllib3和chardet所需的版本：的摘录/usr/local/lib/python2.7/dist- packages/requests/__init__.py：

    # Check urllib3 for compatibility.
    major, minor, patch = urllib3_version  # noqa: F811
    major, minor, patch = int(major), int(minor), int(patch)
    # urllib3 >= 1.21.1, <= 1.22
    assert major == 1
    assert minor >= 21
    assert minor <= 22

    # Check chardet for compatibility.
    major, minor, patch = chardet_version.split('.')[:3]
    major, minor, patch = int(major), int(minor), int(patch)
    # chardet >= 3.0.2, < 3.1.0
    assert major == 3
    assert minor < 1
    assert patch >= 2


# Check imported dependencies for compatibility.
try:
    check_compatibility(urllib3.__version__, chardet.__version__)
except (AssertionError, ValueError):
    warnings.warn("urllib3 ({0}) or chardet ({1}) doesn't match a supported "
                  "version!".format(urllib3.__version__, chardet.__version__),
                  RequestsDependencyWarning)

我的版本是：

ii  python-urllib3 1.9.1-3   all HTTP library with thread-safe connection pooling for Python 
ii  python-chardet  2.3.0-1  all universal character encoding detector for Python2

我没有别的主意了…

谢谢大家，对不起我的英语:)

Answer 1

你有一个混合的设置（包括apt和pip用来安装系统范围内，这是常见的），它确实不匹配，请求所需模块的支持版本（和PIP v1.5.6也相当大）。

在requests（？哪个版本可能从剩下的pip install）要求：
urllib3：1.21.1 - 1.22
chardet的：3.0.2 - 3.1.0

您具有：
来自python-urllib3的urllib3（1.9.1）1.9.1-3 debian软件包
来自python-chardet的chardet（2.3.0）2.3.0-1 debian软件包

两种选择：

• 可以requests从OS发行版降级到该版本（请参阅apt show python-requests参考资料），也可以从pypi.org降级到较旧的版本，或者

• 或pip install在用户级别（--userpip安装选项）或在virtualenv中安装较新的urllib3和chardet（您可以从pipy.org手动下载wheel文件并对其进行处理，包括所有依赖项）。

您可以在virtualenv（apt show python- virtualenv）中测试所有内容。它甚至应该在其虚拟环境中为您部署更新的点子。也可以在用户级别（--user）上安装新的pip
10.0.1，并与操作系统提供的pip一起安装，但是您需要注意这一点。祝好运！