python环境搭建

1 下载python,并且安装 配置环境:

1. 下载网址:https://www.python.org/downloads/

2. 修改Mac默认python版本为3.9.1

mac一般自带python2.7
可以修改 ~/.bash_profile (具体的path取决于你的python3安装路径):

vi ~/.bash_profile 
   # 添加这一行
   alias python="/usr/local/bin/python3"

重启服务:
   source ~/.bash_profile

验证:

techtrexcomwwwNew:~ wjw$ python
Python 3.9.2 (v3.9.2:1a79785e3e, Feb 19 2021, 09:09:00) 
[Clang 12.0.0 (clang-1200.0.32.29)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> exit()

3

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