在win10上pip安裝ujson報錯
之前一直用的是mac本，但由於疫情問題，最近不得不用win10系統來進行python開發，在使用pip安裝依賴包ujson時，遇到了問題，如下：
(custom_itsm) D:\DEVELOP\items\hn_test>pip install ujson
DEPRECATION: Python 2.7 reached the end of its life on January 1st, 2020. Please upgrade your Python as Python 2.7 is no
longer maintained. A future version of pip will drop support for Python 2.7. More details about Python 2 support in pip
, can be found at https://pip.pypa.io/en/latest/development/release-process/#python-2-support
Collecting ujson
Using cached ujson-1.35.tar.gz (192 kB)
Building wheels for collected packages: ujson
Building wheel for ujson (setup.py) ... error
ERROR: Command errored out with exit status 1:
command: 'd:\develop\virtaul\custom_itsm\scripts\python.exe' -u -c 'import sys, setuptools, tokenize; sys.argv[0] = '
"'"'c:\\users\\ysss\\appdata\\local\\temp\\pip-install-taurl6\\ujson\\setup.py'"'"'; __file__='"'"'c:\\users\\ysss\\appd
ata\\local\\temp\\pip-install-taurl6\\ujson\\setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.re
ad().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' bdist_wheel -d 'c:\u
sers\ysss\appdata\local\temp\pip-wheel-jzkbhc'
cwd: c:\users\ysss\appdata\local\temp\pip-install-taurl6\ujson\
Complete output (5 lines):
running bdist_wheel
running build
running build_ext
building 'ujson' extension
error: Microsoft Visual C++ 9.0 is required. Get it from http://aka.ms/vcpython27
問題很明顯：Microsoft Visual C++ 9.0 is required。意思是缺少編譯ujson的C++編譯工具，本來想按照提示去http://aka.ms/vcpython27網站下載所需要的依賴，
但經過一番嘗試失敗了。不過經過一番搜索，最終還是找到了就解決辦法：
下載whl文件直接安裝（Python2和Python3適用）
下載地址：https://www.lfd.uci.edu/~gohlke/pythonlibs
找到並下載所需要的whl文件。
放到項目中，並安裝：pip install xxx.whhl