Import and use of Python modules

Let's take a look at the Python module import and

[email protected] dist-packages]# cat indentation.py

#!/usr/bin/enb pythonversion = ' v1.0 ' author = ' Madon ' def sayhi (n): print ' Hi, this is a module. ', n

Here is a description of this module I wrote. 2-3 rows of variables used, the user calls version and author output corresponding content.

Line four uses Sayhi to add user input content. Prints the contents of print.

[Email protected] dist-packages]# pwd

/usr/lib/python2.7/dist-packages

[Email protected] dist-packages]#

>>> Import Tab

>>> Import Indentation

>>> indentation.

Indentation.__class__ (indentation.__package__

Indentation.__delattr__ (indentation.__reduce__ (

Indentation.__dict__ indentation.__reduce_ex__ (

Indentation.__doc__ indentation.__repr__ (

indentation.__file__ indentation.__setattr__ (

Indentation.__format__ (indentation.__sizeof__ (

INDENTATION.__GETATTRIBUTE__ (indentation.__str__ (

Indentation.__hash__ (indentation.__subclasshook__ (

Indentation.__init__ (Indentation.author

indentation.__name__ Indentation.sayhi (

indentation.__new__ (indentation.version

>>> indentation.version

' v1.0 '

>>> Indentation.author

' Madon '

>>> indentation.sayhi (' Madon ')

Hi, this is a module. Madon

>>> exit ()

[[Email protected] Di

OS module and directly using the system

>>> Import Tab

>>> Import OS

>>> os.system (' du ')

16.

0

>>> os.system (' DF ')

Filesystem 1k-blocks used Available use% mounted on

/dev/sda3 40771124 1879660 38891464 5%/

Devtmpfs 240200 0 240200 0%/dev

Tmpfs 248952 0 248952 0%/dev/shm

Tmpfs 248952 24964 223988 11%/run

Tmpfs 248952 0 248952 0%/sys/fs/cgroup

/DEV/SDA1 98988 95756 3232 97%/boot

0

>>> from OS import system

>>> system (' DF ')

Filesystem 1k-blocks used Available use% mounted on

/dev/sda3 40771124 1879660 38891464 5%/

Devtmpfs 240200 0 240200 0%/dev

Tmpfs 248952 0 248952 0%/dev/shm

Tmpfs 248952 24964 223988 11%/run

Tmpfs 248952 0 248952 0%/sys/fs/cgroup

/DEV/SDA1 98988 95756 3232 97%/boot

0

>>>

>>> from OS import system as S

>>> s (' DF ')

Filesystem 1k-blocks used Available use% mounted on

/dev/sda3 40771124 1879660 38891464 5%/

Devtmpfs 240200 0 240200 0%/dev

Tmpfs 248952 0 248952 0%/dev/shm

Tmpfs 248952 24964 223988 11%/run

Tmpfs 248952 0 248952 0%/sys/fs/cgroup

/DEV/SDA1 98988 95756 3232 97%/boot

0

>>>

If the module is not found under these paths, it will be an error.

>>> Import Sys

>>> Sys.path

[', '/usr/lib64/python27.zip ', '/usr/lib64/python2.7 ', '/usr/lib64/python2.7/plat-linux2 ', '/usr/lib64/python2.7/ Lib-tk ', '/usr/lib64/python2.7/lib-old ', '/usr/lib64/python2.7/lib-dynload ', '/usr/lib64/python2.7/site-packages ' , '/usr/lib64/python2.7/site-packages/gtk-2.0 ', '/usr/lib/python2.7/site-packages ']

>>>

This article from the "Clear Sky" blog, declined reprint!

Import and use of Python modules