1. Using file handling we can do file operations # How to open a file in python ? 1. We can open a file two ways in python 1. open() 2. With open() # OPEN 1. Using open we can open only one file at a time and we have to close a file explicity # WITH OPEN 1. Using with open we can open multiple files at a time and no need to close files explicity # File Open Modes In Python r ==> It opens a file for read only. w ==> It allows write-level access to a file. If the file already exists, then it’ll get overwritten. It’ll create a new file if the same doesn’t exist. a ==> It opens the file in append mode. a+ ==> It opens a file FOR append AND read rb ==> It opens a binary file for read 1) Read file fh = open('names.txt', 'r') ## To open a file from another path #fw = open(...
1. Any .py file is a module in python 2. Using module we can re use the code # How to import a module ? We can import in two ways 1. import 2. from import # Difference between import and from import 1. Using import we can import entire module and we have to use module name as prefix for each module attribute. 2. Using from import we can import required attribute from module and no need to give prefix as module name to use module attribute. 1) import statement ''' 1. we can import a module using import keyword ''' import base_module # Print a variable from base_module #print(base_module.names) ## call a add function from base_module #base_module.add() ## call a sum function from base_module #r = base_module.sum(20,50) #print(' Sum value is :', r) 2) from import statement ''' 1. Import module attributes using "from" keyword ''' ## to import only names variable #from base_module import names ## to import only nam...
Python Programming tutorial provides basic and advanced concepts of Python programming. This Python programming tutorial is designed for beginners and professionals. Python is a simple, general purpose, high level, and object-oriented programming language. In this we have different chapter and their concepts Python Programming : tokens, literals, identifiers, keywords, special symbols and operators; fundamental data types, expressions, type conversions, handling Input and output in Python. Selection Statements : if statement, if-else statement, if-elif-else statement, nested-if statement. Iterative Statements : while loop, for loop, break statement, continue statement, pass and else statements used with loops. Sequences : Lists and operations - creating, inserting elements, updating elements, deleting elements, searching and sorting, list comprehensions, nested lists; tuples - creating, searching and sorting, nested tuples; strings - Initializing a...
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