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引导：使用pip安装，pip install pygame，不过此方法会安装到系统默认的python2中，python3依然无法使用
要想安装到相应的python版本中要使用对应的pip 比如安装到python3.6中需要使用pip3.6 install pygame
看下我装了几个版本，好多
xubin@xubindeMBP:~$ python
python python2.7 python3 python3.6 python3.6m python3.7 python3.7m pythonw
python-config python2.7-config python3-config python3.6-config python3.6m-config python3.7-config python3.7m-config pythonw2.7安装中可能出现的问题：主要是在python3.6用的时候出现的，又重新装了一个3.7的
问题1：
xubin@xubindeMBP:~$ pip3
Traceback (most recent call last):
File "/etc/python/python3.6/bin/pip3", line 9, in <module>
load_entry_point('pip==8.0.2', 'console_scripts', 'pip3')()
File "/etc/python/python3.6/lib/python3.6/site-packages/setuptools-19.6-py3.6.egg/pkg_resources/__init__.py", line 550, in load_entry_point
File "/etc/python/python3.6/lib/python3.6/site-packages/setuptools-19.6-py3.6.egg/pkg_resources/__init__.py", line 2710, in load_entry_point
File "/etc/python/python3.6/lib/python3.6/site-packages/setuptools-19.6-py3.6.egg/pkg_resources/__init__.py", line 2370, in load
File "/etc/python/python3.6/lib/python3.6/site-packages/setuptools-19.6-py3.6.egg/pkg_resources/__init__.py", line 2376, in resolve
File "/etc/python/python3.6/lib/python3.6/site-packages/pip-8.0.2-py3.6.egg/pip/__init__.py", line 15, in <module>
from pip.vcs import git, mercurial, subversion, bazaar # noqa
File "/etc/python/python3.6/lib/python3.6/site-packages/pip-8.0.2-py3.6.egg/pip/vcs/subversion.py", line 9, in <module>
from pip.index import Link
File "/etc/python/python3.6/lib/python3.6/site-packages/pip-8.0.2-py3.6.egg/pip/index.py", line 29, in <module>
from pip.wheel import Wheel, wheel_ext
File "/etc/python/python3.6/lib/python3.6/site-packages/pip-8.0.2-py3.6.egg/pip/wheel.py", line 39, in <module>
from pip._vendor.distlib.scripts import ScriptMaker
File "/etc/python/python3.6/lib/python3.6/site-packages/pip-8.0.2-py3.6.egg/pip/_vendor/distlib/scripts.py", line 14, in <module>
from .compat import sysconfig, detect_encoding, ZipFile
File "/etc/python/python3.6/lib/python3.6/site-packages/pip-8.0.2-py3.6.egg/pip/_vendor/distlib/compat.py", line 66, in <module>
from urllib.request import (urlopen, urlretrieve, Request, url2pathname,
ImportError: cannot import name 'HTTPSHandler'ImportError: cannot import name 'HTTPSHandler'，这个错误表示当前python版本无法加载ssl模块，要重新编译安装解决
解决方式：https://blog.csdn.net/qq_24909089/article/details/83377172
问题2：
xubin@xubindeMBP:/usr/local/python3/Python-3.6.1$ brew reinstall python3 --with-brewed-openssl
==> Reinstalling python
==> Installing dependencies for python: pkg-config, sphinx-doc, gdbm, openssl, readline and sqlite
==> Installing python dependency: pkg-config
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
Error: Failure while executing; `git config --local --replace-all homebrew.private true` exited with 1.
xubin@xubindeMBP:/usr/local/python3/Python-3.6.1$ brew reinstall /usr/local/python3/Python-3.6.1 --with-brewed-openssl
Error: No available formula with the name "/usr/local/python3/Python-3.6.1"
xubin@xubindeMBP:/usr/local/python3/Python-3.6.1$ brew reinstall python3 --with-brewed-openssl
==> Reinstalling python
==> Installing dependencies for python: pkg-config, sphinx-doc, gdbm, openssl, readline and sqlite
==> Installing python dependency: pkg-config
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun
Error: Failure while executing; `git config --local --replace-all homebrew.private true` exited with 1.
xcrun: error: invalid active developer path (/Library/Developer/CommandLineTools), missing xcrun at: /Library/Developer/CommandLineTools/usr/bin/xcrun。
xcrun:错误:无效的活动开发者路径(/Library/ developer /CommandLineTools) 这个错误是安装的时候使用的依赖产生的问题
解决方式：https://blog.csdn.net/qq_24909089/article/details/83376244
问题3：
==> Installing python
==> Downloading https://homebrew.bintray.com/bottles/python-3.7.0.mojave.bottle.6.tar.gz
######################################################################## 100.0%
==> Pouring python-3.7.0.mojave.bottle.6.tar.gz
Error: An unexpected error occurred during the `brew link` step
The formula built, but is not symlinked into /usr/local
Permission denied @ dir_s_mkdir - /usr/local/Frameworks
Error: Permission denied @ dir_s_mkdir - /usr/local/Frameworks
Error: An unexpected error occurred during the `brew link` step
翻译：错误:在“brew link”步骤中发生了意外错误
构建的公式，但没有符号连接到/usr/local
拒绝@ dir_s_mkdir - /usr/local/ framework的权限
错误:拒绝@ dir_s_mkdir - /usr/local/Frameworks权限
是没有Frameworks文件权限，实用的办法是手动创建
解决方式：https://blog.csdn.net/qq_24909089/article/details/83378210
这些都没有问题的话，可正常执行pip3.7 install pygame，安装完成进入python3导入pygame模块查看 没有报错表示成功。
xubin@xubindeMBP:~$ pip3.7 install pygame
Collecting pygame
Downloading https://files.pythonhosted.org/packages/b9/89/aca02f8771727c2713c11a39c1cc295e4deb60be322be19ad7460570f978/pygame-1.9.4-cp37-cp37m-macosx_10_11_intel.whl (4.9MB)
100% |████████████████████████████████| 4.9MB 621kB/s
Installing collected packages: pygame
Successfully installed pygame-1.9.4
xubin@xubindeMBP:~$ python3.7
Python 3.7.0 (default, Oct 2 2018, 09:18:58)
[Clang 10.0.0 (clang-1000.11.45.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> import pygame
pygame 1.9.4
Hello from the pygame community. https://www.pygame.org/contribute.html
>>> exit();网站推荐：https://stackoverflow.com/
在这里可以找到更多的问题解决方法，不过都是英文的希望你的浏览器也有翻译功能。
如有不明白的可留言。