Python modules

Modules in python

#use import statement to import modules
import random
r = random.randint(1,10)
#use from-import statements to import functions
from random import randint
r = randint(1,10)
#use from module import * statement to import all functions
from random import *
r = randint(1,10)

Python modules

A programmer usually prefer the predefined functions and variables for document,
Modules are collection of several diffrent definitions(functions and variables)
and statements.Or to put simply The files with ".py" appended at the name of the
source code,the user can import that module(files) or specific function fromthat
module into the file.
programmer use the module,complete project in less time and more efficient way.
programmer generally import either the module which user saved with ".py" or can
use some standard module like random,queue,array,math,profile,statistics etc....
just type "help('modules')" and you can see all standard modules in interactive
mode.
-------------------------------------------------------------------------------
 Eg--> # here entire math universe will come into the program 
>>> import math
>>> math.cos(60)# math.cos()
-0.9524129804151563
>>> math.ceil(6.12)#math.ceil()
7
>>> math.log2(4)#math.log2()
2.0
-------------------------------------------------------------------------------
#but if you want specific built in function then use "from".
 Eg--> # only perticular function will come from the math module.
>>> from math import sqrt,sin
>>> sqrt(9)#math module will be undefine since only function sqrt,sin defined
3.0
>>> sin(60)# sin is imported from math and "math." is not required
-0.3048106211022167
>>> cos(60)# cos is not part of the built in function that imported from math.
'''Traceback (most recent call last):
  File "<pyshell#3>", line 1, in <module>
    cos(60)
NameError: name 'cos' is not defined'''
>>> math.cos(60)# this gives error because math has not been imported
'''Traceback (most recent call last):
  File "<pyshell#4>", line 1, in <module>
    math.cos(60)
NameError: name 'math' is not defined'''
-------------------------------------------------------------------------------

Modules in python

import  pandas as pd:

Similar codes

0 vote366 views2 answers
Python function overloading
Python
0 vote319 views10 answers
Python pygeoip example
Python
0 vote328 views1 answer
How to use put method in django
Python
1 vote363 views1 answer
Python swap function
Python
0 vote347 views1 answer
Python select from list by condition
Python
14 votes328 views6 answers
If condition python
Python
0 vote351 views1 answer
Python request coinmarketcap
Python
0 vote327 views1 answer
Python declare immutable variable
Python
0 vote331 views2 answers
Programação orientada a objetos python - Pessoa
Python
0 vote322 views1 answer
Python program to remove newline characters from a file
Python