4.3. 运行python¶
4.3.1. 在解释器中运行¶
在命令行中输入python或者ipython，解释器交互环境，然后输入python脚本，敲击回车，即可执行:
➜ ~ python
Python 2.7.13 (default, Apr 26 2017, 20:42:49)
[GCC 4.2.1 Compatible Apple LLVM 8.0.0 (clang-800.0.42.1)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>>
该种模式下退出交互环境，输入exit():
>>> exit()
➜ ~ ipython
Python 2.7.13 (default, Apr 26 2017, 20:42:49)
Type "copyright", "credits" or "license" for more information.
IPython 5.1.0 -- An enhanced Interactive Python.
? -> Introduction and overview of IPython's features.
%quickref -> Quick reference.
help -> Python's own help system.
object? -> Details about 'object', use 'object??' for extra details.
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该种模式下退出输入quit或exit
4.3.2. 直接运行python文件¶
在命令行模式下，执行输入 python <文件名> ，即可执行python脚本，如python脚本（a.py）内容为:
print(123)
执行a.py:
➜ ~ python a.py
123
➜ ~