Question

我正在django框架中使用python3.8，为此我必须安装mysqlclient。但是当我尝试时会出现错误

pip3 install mysqlclient

将这样的输出作为错误。

Collecting mysqlclient
  Using cached https://files.pythonhosted.org/packages/d0/97/7326248ac8d5049968bf4ec708a5d3d4806e412a42e74160d7f266a3e03a/mysqlclient-1.4.6.tar.gz
    ERROR: Command errored out with exit status 1:
     command: /home/LPython/my_env/bin/python3.8 -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-fgg27tgk/mysqlclient/setup.py'"'"'; __file__='"'"'/tmp/pip-install-fgg27tgk/mysqlclient/setup.py'"'"';f=getattr(tokenize, '"'"'open'"'"', open)(__file__);code=f.read().replace('"'"'\r\n'"'"', '"'"'\n'"'"');f.close();exec(compile(code, __file__, '"'"'exec'"'"'))' egg_info --egg-base /tmp/pip-install-fgg27tgk/mysqlclient/pip-egg-info
         cwd: /tmp/pip-install-fgg27tgk/mysqlclient/
    Complete output (11 lines):
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/home/LPython/my_env/lib/python3.8/site-packages/setuptools/__init__.py", line 20, in <module>
        from setuptools.dist import Distribution, Feature
      File "/home/LPython/my_env/lib/python3.8/site-packages/setuptools/dist.py", line 35, in <module>
        from setuptools import windows_support
      File "/home/LPython/my_env/lib/python3.8/site-packages/setuptools/windows_support.py", line 2, in <module>
        import ctypes
      File "/usr/local/lib/python3.8/ctypes/__init__.py", line 7, in <module>
        from _ctypes import Union, Structure, Array
    ModuleNotFoundError: No module named '_ctypes'
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

Answer 1

我认为您的系统/服务器中缺少 libffi-dev 库文件。使用以下命令来检查是否已安装库

apt-cache search libffi

要安装 libffi-dev

sudo apt-get install -y libffi-dev

之后尝试

pip3 install mysqlclient

方法2

sudo apt-get install python-dev default-libmysqlclient-dev
sudo apt-get install python3-dev
pip install mysqlclient

Answer 2

let cert = req.connection.getPeerCertificate()由于python bug而出现。在最新版本的python中，此错误已解决。

在那里您必须更新您的点值
接下来，您必须运行此ModuleNotFoundError: No module named '_ctypes'或yum install libffi-deve
然后运行sudo dnf install libffi-devel或pip3 install mysqlclient安装mysqlclient。

Answer 3

我的问题解决了。当我安装python-3.8.0时，我没有编译它，这就是问题所在。我正在使用Centos7，所以我去了终端的根，在安装Python之前先安装了必备软件。


# sudo yum install gcc openssl-devel bzip2-devel libffi-devel

download latest version

#wget https://www.python.org/ftp/python/3.8.0/Python-3.8.0.tgz

Now extract the downloaded package.

Compile Python Source

#cd Python-3.8.0
#sudo ./configure --enable-optimizations

make altinstall is used to prevent replacing the default python binary file /usr/bin/python.

#sudo make altinstall

remove downloaded source archive file from your system

#sudo rm Python-3.8.0.tgz

Check Python Version

#python3.8 -V 

Then I could be able to install mysqlclient by
# pip3 install mysqlclient

无法安装mysqlclient

3 个答案: