mac安装模块报错解决指南

1. Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/5z/rdw4jbs11b5168_0wmkg73w80000gn/T/pip-install-Y5Snd2/twisted/

Collecting channels==1.1.8
  Using cached https://files.pythonhosted.org/packages/7a/a6/5a3420c0b93e127fd5b22eaf4155b8c76eb7c404eeac78f4f0816fab97ce/channels-1.1.8-py2.py3-none-any.whl
Collecting daphne~=1.3 (from channels==1.1.8)
  Using cached https://files.pythonhosted.org/packages/b4/e3/65ba9a2044627826eae52f07a9013f82339bb88917aadf69c702e0e51eea/daphne-1.4.2-py2.py3-none-any.whl
Collecting asgiref~=1.1 (from channels==1.1.8)
  Using cached https://files.pythonhosted.org/packages/ee/6d/67f79a9567de5ba4419c3e8d39622bed0d974d704075d09df765b5ddb5ce/asgiref-1.1.2-py2.py3-none-any.whl
Requirement already satisfied: Django>=1.8 in ./.virtualenvs/dev_system/lib/python2.7/site-packages (from channels==1.1.8) (1.11.9)
Collecting twisted>=17.1 (from daphne~=1.3->channels==1.1.8)
  Using cached https://files.pythonhosted.org/packages/90/50/4c315ce5d119f67189d1819629cae7908ca0b0a6c572980df5cc6942bc22/Twisted-18.7.0.tar.bz2
    Complete output from command python setup.py egg_info:
    Download error on https://pypi.org/simple/incremental/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
    Couldn't find index page for 'incremental' (maybe misspelled?)
    Download error on https://pypi.org/simple/: [SSL: TLSV1_ALERT_PROTOCOL_VERSION] tlsv1 alert protocol version (_ssl.c:590) -- Some packages may not be found!
    No local packages or working download links found for incremental>=16.10.1
    Traceback (most recent call last):
      File "<string>", line 1, in <module>
      File "/private/var/folders/5z/rdw4jbs11b5168_0wmkg73w80000gn/T/pip-install-Y5Snd2/twisted/setup.py", line 20, in <module>
        setuptools.setup(**_setup["getSetupArgs"]())
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/setuptools/__init__.py", line 139, in setup
        _install_setup_requires(attrs)
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/setuptools/__init__.py", line 134, in _install_setup_requires
        dist.fetch_build_eggs(dist.setup_requires)
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/setuptools/dist.py", line 514, in fetch_build_eggs
        replace_conflicting=True,
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/pkg_resources/__init__.py", line 777, in resolve
        replace_conflicting=replace_conflicting
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/pkg_resources/__init__.py", line 1060, in best_match
        return self.obtain(req, installer)
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/pkg_resources/__init__.py", line 1072, in obtain
        return installer(requirement)
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/setuptools/dist.py", line 581, in fetch_build_egg
        return cmd.easy_install(req)
      File "/Users/admin/.virtualenvs/dev_system/lib/python2.7/site-packages/setuptools/command/easy_install.py", line 670, in easy_install
        raise DistutilsError(msg)
    distutils.errors.DistutilsError: Could not find suitable distribution for Requirement.parse('incremental>=16.10.1')
    
    ----------------------------------------
Command "python setup.py egg_info" failed with error code 1 in /private/var/folders/5z/rdw4jbs11b5168_0wmkg73w80000gn/T/pip-install-Y5Snd2/twisted/

解决方案：

sudo pip install incremental

2. python3.6 failing due to ssl module not available

pip installs inside virtual environment with python3.6 failing due to ssl module not available

解决方案：

brew install openssl
brew unlink openssl && brew link openssl --force

vim Python3.6.1/Module/Setup.dist (line 209)
SSL=/usr/local/opt/openssl <---- THIS DEPENDS ON YOUR INSTALLATION
_ssl _ssl.c
-DUSE_SSL -I(SSL)/include/openssl
-L$(SSL)/lib -lssl -lcrypto

export CFLAGS="-I$(brew --prefix openssl)/include"
export LDFLAGS="-L$(brew --prefix openssl)/lib"

./configure && make && make install

3. pycharm 安装第三方库报错：AttributeError: 'module' object has no attribute 'main'

AttributeError: 'module' object has no attribute 'main'

解决方案：

找到pycharm 目录下的 \helper\packaging_tool.py 文件
将其中 pip.main() 改为 pip_main()

4. not found mysql_config

Error not found mysql_config

解决方案：

brew install mysql-connector-c
pip install mysqlclient