Python: Check if String Starts or Ends with a Substring
Learn to check if a string starts with, ends with, or both with a specified substring using the regex and built-in methods, and array slicing.
Python String split() Examples
Learn to split a string in Python from the basic split() method to more advanced approaches such as splitlines() and regex module with examples.
Python range()
Python range type represents an immutable sequence of numbers. The most common use of a range is to use it for iterating over a series of items (list, set, tuple, dictionary or string). The range object is more memory efficient than list or tuple. A range stores only the start, …
Python JSON – Custom Class Deserialization
Learn to deserialize JSON string and convert deserialized JSON data to a custom class (e.g. User) by extending JSONDecoder or object_hook method. In Python custom deserialization example, we have following User class. Here, birthdate of type datetime and we can define any formatter string for it. 1. Python Custom Deserializer …
Python JSON – Custom Class Serialization
Learn to serialize a complex python class (e.g. User) and write serialized JSON data in file by extending JSONEncoder and custom serialization method. In Python serialize complex object to JSON example, we have following User class. Here, birthdate of type datetime. If we don’t use the custom serialization, we will …
Python – Append to JSON File
Learn to read a JSON file and append JSON data into a file in Python. 1. Steps for Appending to a JSON File In Python, appending JSON to a file consists of the following steps: Refer to the following articles to learn how to read JSON from a file and …
Python – Write JSON to a File
Learn to write JSON data into an existing file using json.dump() method. Also, learn to apply sorting and formatting to the JSON written into the file. For quick reference, below is the code which writes a JSON dictionary object to a “users.json” file. 1. json.dump() Method The json.dump() serializes a …
Python JSON – Read a JSON String
Learn to read JSON string in Python with the help of json.loads() method which converts a given JSON string into a Python object. For quick reference, below is the code which reads a JSON string into a Python object. 1. json.loads() Method The json.loads() deserializes a given JSON string into …
Python JSON – Read a JSON file
Learn to read a JSON file in Python with the help of json.load() method which reads the data into a Python object. For quick reference, below is the code which reads a JSON file to a Python object. 1. json.load() Method The json.load() deserializes a given JSON file from the …
Python bcrypt – Hash a Password with bcrypt
Learn to use Python bcrypt module for hashing a plain text password into encrypted String. Also learn to match the supplied password with already stored encrypted password with bcrypt module. 1. Python bcrypt module Bcrypt algorithm was designed by Niels Provos and David Mazières, based on the Blowfish cipher. Bcrypt …
Python hashlib
Learn to calculate the Hash of a file in Python, with examples. It is also called the file checksum or digest. A checksum hash is an encrypted sequence of characters obtained after applying certain algorithms and manipulations on user-provided content. Read More: File checksum in Java 1. Hash Algorithms Hash …
Python String count()
In Python, string.count() is used to count the occurrences of a character or a substring in the given input string. Program Output. 1. String count() Syntax The syntax of count() function is: 1.1. Arguments Only the substring is required parameter. Start index and end index are optional parameters. substring : …
Python String capitalize()
In Python, the capitalize() method capitalizes a string i.e. upper case the very first letter in the given string and lowercases all other characters, if any. Except changing the case (upper/lower), capitalize() does not modify the content of the original string. 1. capitalize() Syntax The syntax of capitalize() is pretty …
Different Ways to Print a List in Python
Learn to print a Python List in different ways such as with/without square brackets or separator, curly braces, and custom formatting with examples.
Python print() to File
Learn 4 ways to redirect print() output from a Python program or script to a file with examples, and when to use which method.
Python Print without New Line: Avoid Line Feeds
In Python, the print() function is used for displaying output on the screen. By default, print() method adds a new line character (\n) at the end of the printed output on the screen. That is why all print() statements display the output in a new line on the screen. While …
Python print() Method
Python print() function prints the given string or object to the standard output. The standard output is the screen or to the text stream file. Example: Print an integer to Screen Program output. Syntax of print() Method The complete syntax of the print() function is: Method Parameters The print() method …
Python input()
The Python input() function allows user inputs in the programs. The input() function reads a line from the input, converts into a string and returns it as method return value. The input() function, optionally, allows a prompt String as the method argument that is displayed to user while taking the …
Python pass Statement
The Python pass statement is used to execute an empty statement. We can use the pass statement when we do not want to execute any statement at a place in the code, but Python requires us to specify a statement to satisfy the Syntax rules. Python pass statement is different …
Python continue Statement
Python continue statement skips the rest of the code inside a loop for the current iteration in a Loop and jumps the program execution to the beginning of the enclosing loop. If the continue statement is inside a nested loop (one loop inside another loop), the continue statement skips only …
Python break Statement
Python break statement is used to terminate the a loop which contains the break statement. When a break statement is executed inside a loop, the program execution jumps to immidiately next statement after the loop. If the break statement is inside a nested loop (one loop inside another loop), the …
Python while Loop
Learn to execute Python statement(s) as long as a condition is True with the help of python while loop. 1. The while Loop A while loop executes a given set of statements in loop, as long as a given conditional expression is True. As soon as, the conditional expression becomes …
Python if … elif … else Statements
Learn about Python conditional statements if, elif, else statements, indentation rules and shorthand if statements with examples.
Python Set
Python Sets are unordered collections of unique elements. Learn about Set datatype in Python, creating and modifying Sets and other useful Set operations available. 1. What is Set A Set in Python is: an unordered collection of unique hashable objects unindexed collection written with curly brackets or set() constructor Internally, …
Python Dictionary
A Dictionary in Python is a collection data type which is unordered, mutable and indexed. In Python, dictionaries are written with curly brackets { }, and store key-value pairs. Dictionary keys should be the immutable Python object, for example, number, string, or tuple. Keys are case sensitive. Duplicate keys are …
Python bin() Method
Python bin() method converts a given integer to it’s equivalent binary string. If the method parameter is some other object (not integer) then it has to __index__() method (with double underscores on the both sides) which must return an integer value for the object. The prefix 0b represents that a …
Python ascii() Method
Python ascii() method is language inbuilt function and returns a string containing a printable representation of an object. ascii() escapes the non-ASCII characters in the string using \x, \u or \U escapes. 1. Syntax The syntax of the ascii() method is: Here the object is required method argument and it …
Python Hello World Program
In this post, we will see a very simple Python program that displays “Hello, World!” on the screen. Similar to Hello World programs in other languages, this program is also used to illustrate the syntax of the Python language. It is assumed that you have installed Python runtime on your …
Python Examples
Read, understand, and practice these Python examples to better understand the Python language. These simple python programs will help us understand Python’s basic programming concepts. All the programs on this page are tested and should work on all platforms. 1. Python Program to Print Hello World A very simple Python …
Python all() Function
Python all() function returns True if all the elements of an iterable are True. If any element in the iterable is False, all() returns False. all() can be thought of as logical AND operation on elements on iterable. All values are True, all() returns True. All values are False, all() …
Python any() Function
Python any() function returns True if at least one element of an iterable is Truthy. If no element in iterable is True, any() returns False. any() can be thought of as logical OR operation on elements on iterable. All values are True, any() returns True. All values are False, any() …
Python abs() – Absolute Value of a Number
Python abs() function returns the absolute value of the given integer, floating point or complex number. The precise term for absolute is “non-negative.”
Python Type Conversion and Type Casting
Learn implicit and explicit data type conversions in python. Also learn various type functions used for type conversion and few examples of how to do the typecasting between various python data types. 1. Type Conversion The process, by which one data type is converted to another data type, is called …
Python for Loop (with Examples)
Python for loop is used to iterate over a list or sequence. Follow these examples to iterate over a list, tuple, dictionary, and set using for-loop.
Python – Lists vs Tuples
Learn the differences between lists and tuples in Python. Tuples are great for creating Value Objects. Lists are for storing a collection of value objects.
Python – Comparing tuples
In Python, tuples are compared lexicographically by comparing corresponding elements of two tuples. Learn to compare heterogeneous and unequal tuples.
Python – Tuples
In Pyhton, a tuple is similar to list except it is immutable and are written with optional round brackets. A Tuple is: immutable ordered heterogeneous indexed (starts with zero) written with round brackets (optional but recommneded) is faster during iteration, since it is immutable Tuples are useful for creating objects …
Python List
In Python, lists are ordered, indexed (indices start at 0), mutable, heterogeneous (items need not be of the same type) and written CSV in square brackets.
Python Strings
Larn about Python string datatype and its functions. Learn how to format, align, find length and other such useful programs and exercises.
Python Integer (with Examples)
In Python, the int data type (integer) represents whole numbers that can be positive or negative and can have unlimited precision.
Python Keywords
Python keywords are the reserved words and these keywords cannot be used for any other purpose than they have been designed for.
Python Built-in Data Types: A Beginner’s Guide
A data type defines the type of a variable. In this guide, we’ll explore some of the most commonly used built-in data types in Python with examples.
Python Variables (with Examples)
In Python tutorial, learn the basics of variables, naming conventions, and the difference between local and global variables with examples.
Python Single and Multi-Line Comments with Shortcuts
In Python (or any other programming language), comments are used to explain the source code. Comments describe the code, which helps in maintaining the application in the future for ourselves and others. In Python, comments come in two primary forms: single-line comments and multiple-line comments. Let us learn in detail. …
Python string endswith() example
Python string.endswith() is used to check the end of a string for specific text patterns e.g. domain name extensions and so on.
Python String startswith()
Python string.startswith() method is used to check the start of a string for specific text patterns e.g. URL schemes and so on.
Python String split()
Python example to split string into tokens using the delimiters in the string. Learn to split string using single or multiple delimiters in python.
Python Dict Intersection: Find Common Keys
Python examples to find common keys between two dictionaries i.e. dictionary intersection items. Learn to compare two dictionaries keys and values.
Python OrderedDict
Learn the differences between a dictionary and OrderedDict, and also how to create, update and delete the items from the Python OrderedDict.
Python Priority Queue using queue, heapq and bisect Modules
Learn to implement a priority queue in Python using the queue.PriorityQueue class, heapq and bisect modules with examples.