kerasのインストールがpipでは入らなかった話

Kerasのインストール

まずはAnaconda最新版(5.0.1)を入れた

https://www.anaconda.com/download/

その後、Anaconda promptを起動し

pip install kerasによってkerasのインストールを試みたが以下のようなエラーにより失敗

Exception:
Traceback (most recent call last):
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\basecommand.py", line 215, in main
status = self.run(options, args)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\commands\install.py", line 335, in run
wb.build(autobuilding=True)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\wheel.py", line 749, in build
self.requirement_set.prepare_files(self.finder)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
ignore_dependencies=self.ignore_dependencies))
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\req\req_set.py", line 554, in _prepare_file
require_hashes
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\req\req_install.py", line 278, in populate_link
self.link = finder.find_requirement(self, upgrade)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\index.py", line 465, in find_requirement
all_candidates = self.find_all_candidates(req.name)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\index.py", line 423, in find_all_candidates
for page in self._get_pages(url_locations, project_name):
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\index.py", line 568, in _get_pages
page = self._get_page(location)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\index.py", line 683, in _get_page
return HTMLPage.get_page(link, session=self.session)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\index.py", line 811, in get_page
inst = cls(resp.content, resp.url, resp.headers)
File "C:\Users\mimik\Anaconda3\lib\site-packages\pip\index.py", line 731, in __init__
namespaceHTMLElements=False,
TypeError: parse() got an unexpected keyword argument 'transport_encoding'

その後、conda install kerasを試すと以下のメッセージが出て、

インストールが成功した。

Fetching package metadata .............
Solving package specifications: .

Package plan for installation in environment C:\Users\mimik\Anaconda3:

The following NEW packages will be INSTALLED:

backports.weakref: 1.0rc1-py36_0
keras: 2.0.8-py36h65e7a35_0
libprotobuf: 3.2.0-vc14_0
markdown: 2.6.9-py36_0
protobuf: 3.2.0-py36_0
tensorflow: 1.2.1-py36_0

The following packages will be UPDATED:

anaconda: 5.0.1-py36h8316230_2 --> custom-py36h363777c_0
vs2015_runtime: 14.0.25123-hd4c4e62_2 --> 14.0.25420-0

The following packages will be DOWNGRADED:

bleach: 2.0.0-py36h0a7e3d6_0 --> 1.5.0-py36_0
html5lib: 0.999999999-py36ha09b1f3_0 --> 0.9999999-py36_0

Proceed ([y]/n)? y

数点のバージョン違いがあったらしい