Modules in python

Package in python

A package is basically a directory with Python files and a file with the name __init__.py

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 vote162 views1 answer
Python read file between two strings
Python
2 votes223 views1 answer
Pandas index false print
Python
0 vote161 views1 answer
Change the frequency to column in pandas
Python
0 vote158 views1 answer
HTTPSConnectionPool(host='files.pythonhosted.org', port=443): Read timed out
Python
0 vote206 views1 answer
Find all nan columns pandas
Python
0 vote152 views3 answers
Best python programs
Python
-1 vote170 views2 answers
How to convert 2 dimensional in 1 dimensional array
Python
1 vote162 views1 answer
Read csv python without id
Python
0 vote157 views1 answer
XML to MS SQL
Python
1 vote148 views1 answer
Flask form errors
Python