python测试环境Ubuntu18.04

一、

whereis python

ls@ls-virtual-machine:/mnt/hgfs/django$ whereis python
python: /usr/bin/python3.6 /usr/bin/python2.7 /usr/bin/python3.6m /usr/bin/python /usr/bin/python2.7-config /usr/lib/python3.6 /usr/lib/python3.7 /usr/lib/python2.7 /etc/python3.6 /etc/python2.7 /etc/python /usr/local/lib/python3.6 /usr/local/lib/python2.7 /usr/include/python2.7 /usr/include/python3.6m /usr/share/python /usr/share/man/man1/python.1.gz

二、

1、新建 test.py 文件：touch test.py

2、添加内容：

#!/usr/bin/env python3
  
import sys
print(hello,world)
#print sys.path  #python 2.7 的写法
print(sys.path)

3. 执行：./test.py

ls@ls-virtual-machine:/mnt/hgfs/django$ ./test.py 
hello, world
['/mnt/hgfs/django', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']

#!/usr/bin/python3   等同于  #!/usr/bin/env   python3    //推荐用后者

#!/usr/bin/python   等同于  #!/usr/bin/env   python2.7