Python Tutorial

Introduction Python Features Python Applications System requirements for Python Python Installation Python Examples Python Basics Python Indentation Python Variables Python Data Types Python IDE Python Keywords Python Operators Python Comments Python Pass Statement

Python Conditional Statements

Python if Statement Python elif Statement Python If-else statement Python Switch Case

Python Loops

Python for loop Python while loop Python Break Statement Python Continue Statement Python Goto Statement

Python Arrays

Python Array Python Matrix

Python Strings

Python Strings Python Regex

Python Built-in Data Structure

Python Lists Python Tuples Python Lists vs Tuples Python Dictionary Python Sets

Python Functions

Python Function Python min() function Python max() function Python User-define Functions Python Built-in Functions Python Recursion Anonymous/Lambda Function in Python python apply() Function Python lambda() Function

Python File Handling

Python File Handling Python Read CSV Python Write CSV Python Read Excel Python Write Excel Python Read Text File Python Write Text File Read JSON File in Python

Python Exception Handling

Python Exception Handling Python Errors and exceptions Python Assert

Python OOPs Concept

OOPs Concepts in Python Classes & Objects in Python Inheritance in Python Polymorphism in Python Python Encapsulation Python Constructor Python Super function Python Static Method Static Variables in Python Abstraction in Python

Python Iterators

Iterators in Python Yield Statement In Python

Python Generators

Python Generator

Python Decorators

Python Decorator

Python Functions and Methods

Python Built-in Functions Python String Methods Python List Methods Python Dictionary Methods Python Tuple Methods Python Set Methods

Python Modules

Python Modules Python Datetime Module Python Math Module Python Import Module Python Time Module Python Random Module Python Calendar Module CSV Module in Python Python Subprocess Module Python Subprocess

Python MySQL

Python MySQL Python MySQL Client Update Operation Delete Operation Database Connection Creating new Database using Python MySQL Creating Tables Performing Transactions

Python MongoDB

Python MongoDB

Python SQLite

Python SQLite

Python Data Structure Implementation

Python Stack Python Queue Python Linked List Python Hash Table Python Graph

Python Advance Topics

Speech Recognition in Python Face Recognition in Python Python Linear regression Python Rest API Python Command Line Arguments Python JSON Python Virtual Environment Type Casting in Python Python Collections Python Commands Python Data Visualization Python Debugger Python DefaultDict Python Enumerate

Python 3

Anaconda in Python 3 Anaconda python 3 installation for windows 10 List Comprehension in Python3

Misc

Python PPTX Python Pickle Python Seaborn Python Coroutine Python EOL Python Infinity Python math.cos and math.acos function Python Project Ideas Based On Django Reverse a String in Python Reverse a Number in Python Python Word Tokenizer Python Trigonometric Functions Python try catch exception GUI Calculator in Python Implementing geometric shapes into the game in python Installing Packages in Python Python Try Except Python Sending Email Socket Programming in Python Python CGI Programming Python Data Structures Python abstract class Python Compiler Python K-Means Clustering NSE Tools In Python Operator Module In Python Palindrome In Python Permutations in Python Pillow Python introduction and setup Python Functionalities of Pillow Module Python Argmin Python whois Python JSON Schema Python lock Return Statement In Python Reverse a sentence In Python tell() function in Python Why learn Python? Write Dictionary to CSV in Python Write a String in Python Binary Search Visualization using Pygame in Python Latest Project Ideas using Python 2022 Closest Pair of Points in Python ComboBox in Python Python vs R Best resources to learn Numpy and Pandas in python Check Letter in a String Python Python Console Python Control Statements Convert Float to Int in Python using Pandas Difference between python list and tuple Importing Numpy in Pycharm Python Key Error Python NewLine Python tokens and character set Python Strong Number any() Keyword in python Best Database in Python Check whether dir is empty or not in python Comments in the Python Programming Language Convert int to Float in Python using Pandas Decision Tree Classification in Python End Parameter in python __GETITEM__ and __SETITEM__ in Python Python Namespace Python GUI Programming List Assignment Index out of Range in Python List Iteration in Python List Index out of Range Python for Loop List Subtract in Python Python Empty Tuple Python Escape Characters Sentence to python vector Slicing of a String in Python Executing Shell Commands in Python Genetic Algorithm in python Get index of element in array in python Looping through Data Frame in Python Syntax of Map function in Python After Python What Should I Learn Python AIOHTTP Alexa Python Artificial intelligence mini projects ideas in python Artificial intelligence mini projects with source code in Python Find whether the given stringnumber is palindrome or not First Unique Character in a String Python Python Network Programming Python Interface Python Multithreading Python Interpreter Data Distribution in python Flutter with tensor flow in python Front end in python Iterate a Dictionary in Python Iterate a Dictionary in Python – Part 2 Allocate a minimum number of pages in python Assertion Errors and Attribute Errors in Python Checking whether a String Contains a Set of Characters in python Python Control Flow Statements *Args and **Kwargs in Python Bar Plot in Python Conditional Expressions in Python Function annotations() in Python How to Write a Configuration file in Python Image to Text in python import() Function in Python Import py file in Python Multiple Linear Regression using Python Nested Tuple in Python Python String Negative Indexing Reading a File Line by Line in Python Python Comment Block Base Case in Recursive function python ER diagram of the Bank Management System in python Image to NumPy Arrays in Python NOT IN operator in Python One Liner If-Else Statements in Python Sklearn in Python Python Ternary Operators Self in Python Python vs Java Python Modulo Python Packages Python Syntax Python Uses Python Bitwise Operators Python Identifiers Python Matrix Multiplication Python AND Operator Python Logical Operators Python Multiprocessing Python Unit Testing __init__ in Python Advantages of Python Is Python Case-sensitive when Dealing with Identifiers Python Boolean Python Call Function Python History Python Image Processing Python main() function Python Permutations and Combinations Difference between Input() and raw_input() functions in Python Conditional Statements in python Confusion Matrix Visualization Python Python Algorithms Python Modules List Difference between Python 2 and Python 3 Is Python Case Sensitive Method Overloading in Python Python Arithmetic Operators Assignment Operators in Python Is Python Object Oriented Programming language Division in Python Python exit commands Continue And Pass Statements In Python Colors In Python Convert String Into Int In Python Convert String To Binary In Python Convert Uppercase To Lowercase In Python Convert XML To JSON In Python Converting Set To List In Python Covariance In Python CSV Module In Python Decision Tree In Python Difference Between Yield And Return In Python Dynamic Typing In Python

How to

How to Substring a String in Python How to Iterate through a Dictionary in Python How to convert integer to float in Python How to reverse a string in Python How to take input in Python How to install Python in Windows How to install Python in Ubuntu How to install PIP in Python How to call a function in Python How to download Python How to comment multiple lines in Python How to create a file in Python How to create a list in Python How to declare array in Python How to clear screen in Python How to convert string to list in Python How to take multiple inputs in Python How to write a program in Python How to compare two strings in Python How to create a dictionary in Python How to create an array in Python How to update Python How to compare two lists in Python How to concatenate two strings in Python How to print pattern in Python How to check data type in python How to slice a list in python How to implement classifiers in Python How To Print Colored Text in Python How to develop a game in python How to print in same line in python How to create a class in python How to find square root in python How to import numy in python How to import pandas in python How to uninstall python How to upgrade PIP in python How to append a string in python How to open a file in python How to Open a file in python with Path How to run a Python file in CMD How to change the names of Columns in Python How to Concat two Dataframes in Python How to Iterate a List in Python How to learn python Online How to Make an App with Python

Sorting

Python Sort List Sort Dictionary in Python Python sort() function Python Bubble Sort

Programs

Factorial Program in Python Prime Number Program in Python Fibonacci Series Program in Python Leap Year Program in Python Palindrome Program in Python Check Palindrome In Python Calculator Program in Python Armstrong Number Program in Python Python Program to add two numbers Anagram Program in Python Even Odd Program in Python GCD Program in Python Python Exit Program Python Program to check Leap Year Operator Overloading in Python Pointers in Python Python Not Equal Operator Raise Exception in Python Salary of Python Developers in India What is a Script in Python

Conditional Statements in python

In this article, we will learn about conditional statements and how to apply conditional statements in Python.

A decision-making statement is another name for a conditional statement. Decision-making is an important part of programming languages because it will decide program execution flow. These statements are used to execute a statement or group of statements when a given condition is satisfied or true. These statements are used to handle conditions in our program.

Why do We Need Conditional Statements in Python?

We need conditional statements in Python to execute the specific code if the given condition is satisfied or unsatisfied (true or false). Python has these conditional statements are given below:

  1. if statement
  2. if-else statement
  3. if…Elif Statement
  4. Nested if Statement
  5. Short Hand if Statement
  6. Short Hand if-else Statement

Let’s understand them one by one:

  1. if statement
    If statement is a conditional statement in Python, the block of code is executed when the given condition is satisfied. We can say whether a statement is used to determine whether a block of code will be executed or not.

    Syntax of if statement in Python:
if condition:
      statement
      #block of code

         Flow Chart of the if statement is given below:

Conditional Statements in Python

Example 1:

Let’s take some examples of if statement for better understanding:

#take input from user
n=int(input("Enter a number: "))




#if the input number is greater than 15, then print this statement
if(n>15):
    print(n," is greater than 15.")




print("This statement is always executed.")

Input:

20

Output:

Enter a number: 20
20  is greater than 15.
This statement is always executed.

Example 2:

#Initializing a list
list = [ 0, 1, 2, 3, 4]
#check whether the no is in the list or not 
if (2 in list):
    print ("TRUE")

Output:

TRUE
  • If-else Statement
    An if-else statement is a conditional statement in Python. In this, the else statement will work when the if statement is not satisfied. If the block of code inside the if statement is not executed when the condition is not satisfied, then the else statement will execute.

Syntax of if-else statement in Python:

if condition:
  statement
#this block of code will be executed
#when condition is satisfied.
else:
statement
#this block of code will be executed
#when if condition is not satisfied.

The flow chart of the if-else statement is given below:

Conditional Statements in Python

Let's take some examples of if-else statements for better understanding:

Example 1:

#take input from user
n=int(input("Enter a number: "))
#if the input number is greater than 15 then print this statement
if(n>15):
    print(n," is greater than 15.")
#executed when if condition is false.
else:
    print(n, "is not greater than 15.")




print("ProgramProgram will be executed.")

Input:

10

Output:

Enter a number: 10
10 is not greater than 15.
The program will be executed.

Example 2:

#Initializing a list
list = [ 0, 1, 2, 3, 4]




#check whether the no is in the list or not 
if (5 in the list):
    print ("TRUE")




#executed when if condition is not satisfied.
else:
    print("5 is not in the list.")

Output:

5 is not on the list.
  • if…Elif Statement
    Elif statement is a conditional statement in Python. In this, the elif statement is used to check multiple conditions only if the given condition is false and execute the block of code if any of the conditions are true.
    Elif statement is similar to the 'else' statement, but there is one difference. The difference is that the 'else' statement will not check the condition, but elif will check the condition.

Syntax of elif statement in Python:

 if condition:
  statement
#this block of code will be executed
#when condition is satisfied.
elif condition:
statement
#this block of code will be executed
#when if condition is false
#and elif condition is true.
else:
statement
#this block of code will be executed
#when if and elif both conditions are false.

Flow Chart of the elif statement is given below:

Conditional Statements in Python

Let’s take some examples of elif statement for better understanding :

Example 1:

# this program is for calculating the greatest no from given user inputs
print('input three no.: ')




x, y, z = int(input()), int(input()), int(input())
if x > y and x > z: 
    #this block will be executed if x is greatest            
    print(x, 'is the greatest')




elif y > z and y > x:
    #this block will be executed if y is greatest
    print(y, 'is the greatest')




elif z > x and z > y:
    #this block will be executed if x is greatest
    print(z, 'is the greatest')




print("program has executed successfully")

Input:

4

6

2

Output:

Input three no.: 
4
6
2
6 is the greatest
the program has been executed successfully

Example 2:

frontend = ["html", "css", "react", "javascript", "bootstrap"]
backend = ["java", "python", "sql", "django", "mongodb"]




tech = input("enter tech name: ")
if tech in frontend:
    print("it's a frontend tech")
elif tech in the backend:
    print("it's a backend tech")
else:
    print("didn't recognized")




print("program has executed successfully")

Input:

SQL

Output:

enter tech name: SQL
it's a backend tech
the program has been executed successfully
  • Nested if Statement

    A nested if statement is a conditional statement in Python. In this, the Nested if statement is used to check multiple conditions. Nested if means if inside if means if statement within another if statement.

Syntax of Nested if statement in Python:

if condition:
#this block of code will be executed
#when condition is satisfied.
if  condition:
#this block of code will be executed
#when if condition is satisfied.
#Here,the end of nested if statement.
#Here,the end of if statement.

Flow Chart of Nested if statement is given below:

Conditional Statements in Python

Let’s take some examples of Nested if statement for better understanding:

Example 1:

# this program for calculating the greatest no from given user inputs
print('input three no.: ')
x, y, z = int(input()), int(input()), int(input())




if x > y:
    if x > z:
        print(x, 'is the greatest')
    else:
        print(z, 'is the greatest')




else:
    if y < z:
        print(z, 'is the greatest')
    else:
        print(y, 'is the greatest')








print("program has executed successfully")

Input:

15

5

9

Output:

input three no.: 
15
5
9
15 is the greatest
the program has been executed successfully

Example-2:

# this program checks if the number is even and in the range of 100.
num = int(input("enter number: "))




if num % 2 == 0:
    if num < 100:
        print("Even and in range")
    else:
        print("even")
else:
    print("not even")




print("program has executed successfully")

Input:

234

Output:

enter number: 234
even
the program has been executed successfully
  • Short Hand if Statement
    Short Hand if statement is a conditional statement in Python, it is used when only one statement needs to be executed inside the if statement.

 Syntax of Short Hand if statement in Python:

if condition: statement

Let's take an example of a Short Hand if statement for better understanding :

Example:

#input the number 
n = int(input("Enter a number"))




# if input number is divisible by 5 then print this statement
if n % 5 == 0: print(n, "divisible by 5")




print("program is executed successfully")




Input:

35

Output:

Enter a number: 35
35 divisible by 5
program is executed successfully
  • Short Hand else statement

A short Hand else statement is a conditional statement in Python. It is used when only one statement needs to be executed inside the if statement, and else statement

Syntax of Short Hand else statement in Python:

statement if condition else statement

Let's take an example of the Short Hand else statement for better understanding :

Example:

#Initialize a list
nums = [4, 7, 9, 5, 0]
print(6, "is in the list") if 6 in nums else print(6, "is not in the list")
print("program is executed successfully")

Output:

6 is not on the list
program is executed successfully



ADVERTISEMENT
ADVERTISEMENT