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.
eg
Copy CodeThe code is as follows:
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 sys import Argv,path # import specific members
Print (' ================python from import=================================== ')
Print (' path: ', path) # because the path member has already been 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:
Copy CodeThe code is as follows:
From SYS import *
Print (' path: ', path)
From the above we can simply see:
############################
#导入modules, the difference between import and from...import is that it simply says:
# If you want to represent SYS.ARGV in the program with ARGV,
# You can use: from sys import argv
# Generally, you should avoid using from. Import and use the import statement,
# because it will make your program easier to read and avoid conflicting names
###########################
