diffrent import statements

[praveen0437]

there are different type of import what does they differ

import cPickle as pickle

from some_window import *

import os is nothing but importing os module

[bartonc]

there are different type of import what does they differ
import cPickle as pickle

Call this "making an alias. you can shorten the actual name of the module to something else that you'd rather use.

from some_module import *

Import all names defined in the module into the namespace of the importing module. names that start with _ are not imported this way.

import os

This is the best import. You now call os module functions like this:

os.tempfile()

[praveen0437]

Call this "making an alias. you can shorten the actual name of the module to something else that you'd rather use.

Import all names defined in the module into the namespace of the importing module. names that start with _ are not imported this way.

This is the best import. You now call os module functions like this:

os.tempfile()

but cpickle and pickle both are predefined modules for serialization how can we alias cpickle for pickle

[bartonc]

but cpickle and pickle both are predefined modules for serialization how can we alias cpickle for pickle

It's all about namespaces. when you

import cpickle as pickle

you could still

import pickle as slowpickle

because import is using the argument to search for a file name "pickle" which IS NOT the (newly imported namespace) pickle). Try it:

>>> os = 1
>>> import os
>>> help(os)
Help on module os:

NAME
os - OS routines for Mac, DOS, NT, or Posix depending on what system we're on.

FILE
d:\python24\lib \os.py

The argument to import is converted to a string first.