2 basic methods to run Python code - QLGQ/learning-python GitHub Wiki
method 1:
qiang@qiang:/$ cd
qiang@qiang:~$ python
Python 2.7.6 (default, Jun 22 2015, 17:58:13)
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
print('Hello world!')
Hello world!
exit()
method 2:
qiang@qiang:~$ vi hello.py
print("hello world") #vi
qiang@qiang:~$ python hello.py
hello world