Python Learning Notes: the introduction of modules in Python

in thePythonDevelopment (http://www.maiziedu.com/course/python-px/) using the Keyword import to introduce a module, It is similar to the include header file in C + + . For example, to reference the module math, you can use import math to introduce itat the very beginning of the file . when you call a function in the math module, you must refer to this , see the code for details:

>>>improt Math

>>> Math . Sin (0)

To import your own modules:

#hello. Pyprint "Hello world!"

Save the above file under c:/python :

Import SYS

Sys.path. Append (' C:/python ')

>>> Import Hello

Hello world!

Remember to import only once :

>>> Import Hellohello world!

>>> import hello# empty

Modules are used to define functions:

#hello2. Pydef Hello ():

print "Hello, world!"

>>> Import Hello2

>>>hello2.hello ()

Hello, world!.

Here are some miscellaneous:

Package  
In order to better organize the modules, they can be grouped, that is, packages.

Import contants Print contants. PI

Help

>>>help (copy. Copy )

Python Learning Notes: the introduction of modules in Python