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>

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'：

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