Anaconda 包更新故障集锦（持续更新）

1. 用pip安装包keras，报错误信息 TypeError: string argument expected, got ‘NoneType‘：

• PS C:\Users\GoFree> pip install keras --upgrade # 包更新语句
  Collecting keras
    Downloading https://files.pythonhosted.org/packages/54/e8/eaff7a09349ae9bd40d3ebaf028b49f5e2392c771f294910f75bb608b241/Keras-2.1.6-py2.py3-none-any.whl (339kB)
      100% |████████████████████████████████| 348kB 9.8kB/s
  Requirement not upgraded as not directly required: pyyaml in c:\users\gofree\anaconda3\lib\site-packages (from keras) (3.12)
  Requirement not upgraded as not directly required: scipy>=0.14 in c:\users\gofree\anaconda3\lib\site-packages (from keras) (1.1.0)
  Requirement not upgraded as not directly required: numpy>=1.9.1 in c:\users\gofree\anaconda3\lib\site-packages (from keras) (1.14.3)
  Requirement not upgraded as not directly required: h5py in c:\users\gofree\anaconda3\lib\site-packages (from keras) (2.7.1)
  Exception:
  Traceback (most recent call last):
    File "c:\users\gofree\anaconda3\lib\site-packages\pip\_internal\basecommand.py", line 228, in main
      status = self.run(options, args)
    File "c:\users\gofree\anaconda3\lib\site-packages\pip\_internal\commands\install.py", line 291, in run
      resolver.resolve(requirement_set)
    File "c:\users\gofree\anaconda3\lib\site-packages\pip\_internal\resolve.py", line 103, in resolve
      self._resolve_one(requirement_set, req)
    File "c:\users\gofree\anaconda3\lib\site-packages\pip\_internal\resolve.py", line 262, in _resolve_one
      check_dist_requires_python(dist)
    File "c:\users\gofree\anaconda3\lib\site-packages\pip\_internal\utils\packaging.py", line 46, in check_dist_requires_python
      feed_parser.feed(metadata)
    File "c:\users\gofree\anaconda3\lib\email\feedparser.py", line 175, in feed
      self._input.push(data)
    File "c:\users\gofree\anaconda3\lib\email\feedparser.py", line 103, in push
      self._partial.write(data)
  TypeError: string argument expected, got ‘NoneType‘ # 错误信息
  PS C:\Users\GoFree>

• 故障解决方法（不一定成功）：
  • 1.  （推荐） 将这个需要更新的包，强制卸载重安装。命令如下：

    • python -m pip install -U --force-reinstall keras

  • 2.  手动下载更新包。 下载地址： https://www.lfd.uci.edu/~gohlke/pythonlibs/#twisted    ，  https://pypi.org/。  以上两个都可以下载：
    • . whl更新包的安装：（例如，要安装包ad3,  下载目录为 ： E:\  ，安装包名为 ：ad3-2.1-cp36-cp36m-win_amd64.whl注意：36代表python3.6, amd64 代表 64位，不同系统要下载对应的最新包。）

      • PS C:\Users\GoFree> cd E:PS E:\> pip install .\Keras-2.1.6-py2.py3-none-any.whl

    • 普通压缩包安装：安装包为 Keras-2.1.6.tar.gz
      • 先解压缩文件Keras-2.1.6 到  E:\
      • 安装

        PS C:\Users\GoFree> cd E:\Keras-2.1.6
        PS E:\Keras-2.1.6> python .\setup.py install

  • 3 . conda 安装

    • PS E:\Keras-2.1.6> conda install keras
      
      Package plan for installation in environment C:\Users\GoFree\Anaconda3:
      
      The following NEW packages will be INSTALLED:
      
          backports.weakref: 1.0rc1-py36_0 https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free    keras:             2.1.6-py36_0  defaults    libprotobuf:       3.2.0-vc14_0  https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free    markdown:          2.6.9-py36_0  https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free    protobuf:          3.2.0-py36_0  https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free    tensorflow:        1.2.1-py36_0  https://mirrors.tuna.tsinghua.edu.cn/anaconda/pkgs/free
      
      Proceed ([y]/n)? y
      
      PS E:\Keras-2.1.6>

• 最后，三种方法都尝试后，方法3：conda安装 成功安装了包keras .

  PS E:\Keras-2.1.6> conda update keras
  
  # All requested packages already installed.
  # packages in environment at C:\Users\GoFree\Anaconda3:
  #
  keras                     2.1.6                    py36_0    defaults
  PS E:\Keras-2.1.6>

原文地址：https://www.cnblogs.com/lxr1995/p/9141529.html