在mac上安装新版本的python

我尝试在mac上安装新版本的python 3.4，并遵循以下步骤，但现在我无法在终端上使用python命令，每次键入python时都会出现错误：-bash:python:command not found

我尝试了哪些python、python3和python-V命令，但都不起作用。 当我键入这个命令ls-la/usr/local/bin/python*时，它显示安装了python 3.4

lrwxr-xr-x  1 root  wheel  24 Jul  1 20:15 /usr/local/bin/python -> /usr/local/bin/python3.4
lrwxr-xr-x  1 root  wheel  69 Jul  1 15:30 /usr/local/bin/python3 -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3
lrwxr-xr-x  1 root  wheel  72 Jul  1 15:30 /usr/local/bin/python3-32 -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3-32
lrwxr-xr-x  1 root  wheel  76 Jul  1 15:30 /usr/local/bin/python3-config -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3-config
lrwxr-xr-x  1 root  wheel  71 Jul  1 15:30 /usr/local/bin/python3.4 -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4
lrwxr-xr-x  1 root  wheel  74 Jul  1 15:30 /usr/local/bin/python3.4-32 -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4-32
lrwxr-xr-x  1 root  wheel  78 Jul  1 15:30 /usr/local/bin/python3.4-config -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4-config
lrwxr-xr-x  1 root  wheel  72 Jul  1 15:30 /usr/local/bin/python3.4m -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4m
lrwxr-xr-x  1 root  wheel  79 Jul  1 15:30 /usr/local/bin/python3.4m-config -> ../../../Library/Frameworks/Python.framework/Versions/3.4/bin/python3.4m-config

---

请帮我做这个。如何从终端开始使用python。

如果键入：/usr/local/bin/python会发生什么？链接的教程看起来是您可能会做的最糟糕的事情。任何建议sudorm-R/System/Library/Frameworks/Python.framework/Versions/2.7的人都是一个巨魔。@Matt它给了我一个错误-bash:/usr/local/bin/python:没有这样的文件或目录有任何方法可以从新开始python安装，以便我可以在终端上使用它。@user2992438我在ls命令中没有看到*。系统上Python 3.4解释器的确切名称是什么？是蟒蛇34吗？试着直接用/usr/local/bin/pythonXX运行它