Python Modules: It is an object with arbitrarily named attributes that you can bind and reference. Python module can define functions, classes, and variables. Grouping related code into a module makes the code easier to understand and use. And the module is a Python object with arbitrarily named attributes that you can bind and reference.
Python Modules
Create Module
If you want to create a module just save the file name with mymodule.py
Example
def greeting(name):
print ("Hello, " + name)
Use Module: By using an import statement you can use modules.
Example
import mymodule
mymodule.greeting("Freshersnow")
Output: Hello Freshersnow
Renaming Module
We can create an alias when you import a module, by using them as a keyword.
Example
import mymodule as mx a = mx.person1["dress"] print(a)
Output: jeans
Built-in Modules
There are several built-in modules.
Example
import platform x = platform.system() print(x)
Use the dir( ) function
There is one directory function which will be listed all the function names in one module.
Example
import platform x = dir(platform) print(x)
Output: windows
import from module
If you want anything, we can import them by using ‘from’ keyword.
Syntax: from modname import *
Example
def greeting(name):
print("Hello, " + name)
person1 = { "name": "Merry","age": 34,"country": "Australia" }
from mymodule import person1
print (person1["age"])
Output: 36
Locating Modules
When you import a module, the Python interpreter searches for the module in the following sequences −
- The current directory.
- While the module isn’t found, Python then searches each directory in the shell variable PYTHONPATH.
- If all else fails, Python checks the default path. On UNIX, this default path is normally /usr/local/lib/python/.
The module search path is stored in the system module sys as the sys.path variable. The sys.path variable contains the current directory, PYTHONPATH, and the installation-dependent default.