The difference between the import of Python and From...import

Source: Internet
Author: User

Import the appropriate modules in Python using Import or From...import. Module is actually a collection of functions and classes of files, it can achieve some of the corresponding functions, when we need to use these functions, the corresponding modules directly into our program, we can use. This is similar to the Include header file in the C language, in Python we import the modules we need with imports.

 import   sys  print  (  ================python Import mode========= =================   " );  print  (  the command line arguments is:   '   '  for  I in   sys.argv:  print   (i)  print  ( " \n the python path   ' , Sys.path) 
 from  Import Argv,path  #   Imports a specific member of print('================ Python from import===================================')print(' Path: ' # because the path member is already imported, there is no need to add sys.path when referencing it here

If you want to use all the SYS modules using the name, you can do this:

 from Import *print('path:', Path)

The difference between importing Modules,import and From...import is that it simply says:
If you want argv to represent SYS.ARGV in your program, you can use: from sys import argv
Generally, you should avoid using from. Import, because it makes your program easier to read and avoids conflicting names

The difference between the import of Python and From...import

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