直接pip install gmpy2 存在如下报错

Collecting gmpy2
  Using cached gmpy2-2.0.8.zip (280 kB)
Using legacy 'setup.py install' for gmpy2, since package 'wheel' is not installed.
Installing collected packages: gmpy2
    Running setup.py install for gmpy2 ... error
    ERROR: Command errored out with exit status 1:
     command: 'c:\users\82093\appdata\local\programs\python\python37-32\python.exe' -u -c 'import io, os, sys, setuptools, tokenize; sys.argv[0] = '"'"'C:\\Users\\82093\\AppData\\Local\\Temp\\pip-install-ki5k9am8\\gmpy2_804ae297b3f14542924f25a998ff88de\\setup.py'"'"'; __file__='"'"'C:\\Users\\82093\\AppData\\Local\\Temp\\pip-install-ki5k9am8\\gmpy2_804ae297b3f14542924f25a998ff88de\\setup.py'"'"';f = getattr(tokenize, '"'"'open'"'"', open)(__file__) if os.path.exists(__file__) else io.StringIO('"'"'from setuptools import setup; setup()'"'"');code = f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' install --record 'C:\Users\82093\AppData\Local\Temp\pip-record-zx3t7gho\install-record.txt' --single-version-externally-managed --compile --install-headers 'c:\users\82093\appdata\local\programs\python\python37-32\Include\gmpy2'
         cwd: C:\Users\82093\AppData\Local\Temp\pip-install-ki5k9am8\gmpy2_804ae297b3f14542924f25a998ff88de\
    Complete output (5 lines):
    running install
    running build
    running build_ext
    building 'gmpy2' extension
    error: Microsoft Visual C++ 14.0 is required. Get it with "Microsoft Visual C++ Build Tools": 

正确安装方法

1.查看本机python环境的版本
进入cmd，输入python

Python 3.7.6 (tags/v3.7.6:43364a7ae0, Dec 18 2019, 23:46:00) [MSC v.1916 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.

如上代码块可知，该python版本为win32位下的3.7.6

2.进入下方网站安装轮子，即wheel

https://www.lfd.uci.edu/~gohlke/pythonlibs/

3.全局搜索gmpy2

命名规范如下，根据自己的python版本下载对应的轮子

cp27代表2.7版本
cp36代表3.6版本
amd64代表64位
win32代表32位

4.下载好后，将轮子复制到pythn环境下的Scripts目录下

5.打开cmd进入刚刚的Scripts文件下
执行以下命令

pip install + 轮子文件夹所在路径  轮子路径

如上图显示，gmpy2以及安装成功

pycharm安装方法大致同上
首先查看pycharm使用的解释器版本和路径

接着将轮子丢进pycharm使用解释器的Scripts中

然后进入cmd安装即可

如图所示，安装成功

【暖律潜催，幽谷暄和，黄鹂翩翩，乍迁芳树】