python仮想環境にpillowがinstallできない。

Question

###　環境
python3.6.2

やりたいこと

python仮想環境作成に必要なパッケージをrequirment.txtに記載して
一括インストールしようとしました。
最初はwheelがインストールされていない的なことが書いてあったので
pipでインストールしました。
pillowとwheelの関係性がうまくいっていないのか
以下のようなエラーが出力されました。

(myenv) C:\takakura\django>pip3 install -r requirements.txt
Requirement already satisfied: Django~=2.2.10 in c:\takakura\django\myenv\lib\site-packages (from -r requirements.txt (line 1)) (2.2.16)
Collecting Pillow~=2.2.1
  Using cached Pillow-2.2.2.zip (2.2 MB)
Collecting django-widget-tweaks~=1.4.8
  Using cached django_widget_tweaks-1.4.8-py2.py3-none-any.whl (11 kB)
Collecting django-environ~=0.4.5
  Using cached django_environ-0.4.5-py2.py3-none-any.whl (21 kB)
Collecting gunicorn~=20.0.4
  Using cached gunicorn-20.0.4-py2.py3-none-any.whl (77 kB)
Requirement already satisfied: sqlparse>=0.2.2 in c:\takakura\django\myenv\lib\site-packages (from Django~=2.2.10->-r requirements.txt (line 1)) (0.3.1)
Requirement already satisfied: pytz in c:\takakura\django\myenv\lib\site-packages (from Django~=2.2.10->-r requirements.txt (line 1)) (2020.1)
Requirement already satisfied: setuptools>=3.0 in c:\takakura\django\myenv\lib\site-packages (from gunicorn~=20.0.4->-r requirements.txt (line 5)) (28.8.0)
Building wheels for collected packages: Pillow
  Building wheel for Pillow (setup.py) ... error
  ERROR: Command errored out with exit status 1:
   command: 'c:\takakura\django\myenv\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\setup.py'"'"'; __file__='"'"'C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'C:\Users\PCUSER~1\AppData\Local\Temp\pip-wheel-eirtb_uo'
       cwd: C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\
  Complete output (100 lines):
  running bdist_wheel
  running build
  running build_py
  creating build
  creating build\lib.win-amd64-3.6
  creating build\lib.win-amd64-3.6\PIL
  copying PIL\ArgImagePlugin.py -> build\lib.win-amd64-3.6\PIL
  copying PIL\BdfFontFile.py -> build\lib.win-amd64-3.6\PIL
  copying PIL\BmpImagePlugin.py -> build\lib.win-amd64-3.6\PIL

　＜省略＞

  copying PIL\_binary.py -> build\lib.win-amd64-3.6\PIL
  copying PIL\_util.py -> build\lib.win-amd64-3.6\PIL
  copying PIL\__init__.py -> build\lib.win-amd64-3.6\PIL
  running egg_info
  writing Pillow.egg-info\PKG-INFO
  writing dependency_links to Pillow.egg-info\dependency_links.txt
  writing top-level names to Pillow.egg-info\top_level.txt
  reading manifest file 'Pillow.egg-info\SOURCES.txt'
  reading manifest template 'MANIFEST.in'
  writing manifest file 'Pillow.egg-info\SOURCES.txt'
  running build_ext
  building 'PIL._imaging' extension
  error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools
  ----------------------------------------
  ERROR: Failed building wheel for Pillow
  Running setup.py clean for Pillow
Failed to build Pillow
Installing collected packages: Pillow, django-widget-tweaks, django-environ, gunicorn
    Running setup.py install for Pillow ... error
    ERROR: Command errored out with exit status 1:
     command: 'c:\takakura\django\myenv\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\setup.py'"'"'; __file__='"'"'C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\PCUSER~1\AppData\Local\Temp\pip-record-tarbkmez\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\takakura\django\myenv\include\site\python3.6\Pillow'
         cwd: C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\
    Complete output (100 lines):
    running install
    running build
    running build_py
    creating build
    creating build\lib.win-amd64-3.6
    creating build\lib.win-amd64-3.6\PIL
    copying PIL\ArgImagePlugin.py -> build\lib.win-amd64-3.6\PIL
    copying PIL\BdfFontFile.py -> build\lib.win-amd64-3.6\PIL
    copying PIL\BmpImagePlugin.py -> build\lib.win-amd64-3.6\PIL
    copying PIL\BufrStubImagePlugin.py -> build\lib.win-amd64-3.6\PIL
    copying PIL\ContainerIO.py -> build\lib.win-amd64-3.6\PIL
 
　　＜省略＞

   copying PIL\__init__.py -> build\lib.win-amd64-3.6\PIL
    running egg_info
    writing Pillow.egg-info\PKG-INFO
    writing dependency_links to Pillow.egg-info\dependency_links.txt
    writing top-level names to Pillow.egg-info\top_level.txt
    reading manifest file 'Pillow.egg-info\SOURCES.txt'
    reading manifest template 'MANIFEST.in'
    writing manifest file 'Pillow.egg-info\SOURCES.txt'
    running build_ext
    building 'PIL._imaging' extension
    error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": http://landinghub.visualstudio.com/visual-cpp-build-tools
    ----------------------------------------
ERROR: Command errored out with exit status 1: 'c:\takakura\django\myenv\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\setup.py'"'"'; __file__='"'"'C:\Users\PCUSER~1\AppData\Local\Temp\pip-install-6tkl5opl\pillow\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\PCUSER~1\AppData\Local\Temp\pip-record-tarbkmez\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\takakura\django\myenv\include\site\python3.6\Pillow' Check the logs for full command output.

どなたか教えて頂きたいです。

Answer 1

pillowが古すぎてPyhton3.6用のバイナリが配布されていません。
https://pypi.org/project/Pillow/2.2.2/#files

C言語のビルド環境を整えるスキルが必要です。

pillowのバージョンを上げるか、Pyhtonのバージョンを下げるかの方が現実的でしょう。
ただしpillow2.2.2でバイナリ配布されている一番上のPythonバージョン、3.4はすでにサポートが切れています。

Answer 2

試しに以下のコマンドを実行してキャッシュを無効にした状態でインストールしたらどうでしょうか？

pip install pillow --no-cache-dir

Comments

[torutakakura]

--no-cache-dir　をつけて再度実施しましたが
以下のエラーが出力されました。

Collecting pillow==2.2.1
Downloading Pillow-2.2.1.zip (2.2 MB)
|████████████████████████████████| 2.2 MB 3.2 MB/s
Building wheels for collected packages: pillow
Building wheel for pillow (setup.py) ... error

pythonのバージョンを下げて再度実施してみます。