我先安裝了anaconda2，再在他的envs目錄下安裝anaconda3，想要python2，3共存

(E:\ANACONDA) C:\Users\Administrator>E:\ANACONDA\envs\PY3\Scripts\pip install tensorflow

上面這段安裝tensorflow成功
我之前有在python2的環(huán)境下安裝keras在python2環(huán)境下的Jupyter可以import進(jìn)去

(E:\ANACONDA) C:\Users\Administrator>E:\ANACONDA\envs\PY3\Scripts\pip install keras
Collecting keras

再使用上面這個(gè)命令安裝keras,報(bào)錯(cuò)

Collecting keras
Exception:
Traceback (most recent call last):
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\basecommand.py", line 215, in main
    status = self.run(options, args)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\commands\install.py", line 335, in run
    wb.build(autobuilding=True)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\wheel.py", line 749, in build
    self.requirement_set.prepare_files(self.finder)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\req\req_set.py", line 380, in prepare_files
    ignore_dependencies=self.ignore_dependencies))
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\req\req_set.py", line 554, in _prepare_file
    require_hashes
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\req\req_install.py", line 278, in populate_link
    self.link = finder.find_requirement(self, upgrade)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\index.py", line 465, in find_requirement
    all_candidates = self.find_all_candidates(req.name)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\index.py", line 423, in find_all_candidates
    for page in self._get_pages(url_locations, project_name):
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\index.py", line 568, in _get_pages
    page = self._get_page(location)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\index.py", line 683, in _get_page
    return HTMLPage.get_page(link, session=self.session)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\index.py", line 811, in get_page
    inst = cls(resp.content, resp.url, resp.headers)
  File "E:\ANACONDA\envs\PY3\lib\site-packages\pip\index.py", line 731, in __init__
    namespaceHTMLElements=False,
TypeError: parse() got an unexpected keyword argument 'transport_encoding'

網(wǎng)上有一個(gè)方法如下，但是好像因?yàn)槲业膒ython2已經(jīng)安裝了keras,它拒絕再安裝了

(E:\ANACONDA) C:\Users\Administrator>E:\ANACONDA\envs\PY3\Scripts\conda install pip
Fetching package metadata .............
Solving package specifications: .

InstallError: Error: one or more of the packages already installed depend on 'conda'
and should only be installed in the root environment: conda conda-env
These packages need to be removed before conda can proceed.