安装python-igraph报错

    ERROR: Command errored out with exit status 1:
     command: /usr/bin/python -c 'import sys, setuptools, tokenize; sys.argv[0] = '"'"'/tmp/pip-install-geYDzK/python-igraph/setup.py'"'"'; __file__='"'"'/tmp/pip-install-geYDzK/python-igraph/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-pip-egg-info-ihheiv
         cwd: /tmp/pip-install-geYDzK/python-igraph/
    Complete output (6 lines):
    Traceback (most recent call last):
      File "", line 1, in
      File "/tmp/pip-install-geYDzK/python-igraph/setup.py", line 465
        raise RuntimeError(f"Failed to clean {folder} with git")
                                                              ^
    SyntaxError: invalid syntax
    ----------------------------------------
ERROR: Command errored out with exit status 1: python setup.py egg_info Check the logs for full command output.

 系统是python2的版本，但是python-igraph中用的语法是python3，所以只需要降低python-igraph版本即可

pip install python-igraph==0.7