Python Tutorial

Introduction Python Features Python Applications System requirements for Python Python Installation Python Basics 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 Anonymous/Lambda Function in Python

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 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 Calendar Module  

Python MySQL

Python MySQL Python MySQL Update Operation Python MySQL Delete Operation

Python MongoDB

Python MongoDB

Python Data Structure Implementation

Python Stack Python Queue Python Hash Table Python Graph

Python Advance Topics

Speech Recognition in Python Face Recognition in Python Python Rest API Python Command Line Arguments Python JSON Python Virtual Environment Type Casting in Python Collections in python Python Enumerate Python Debugger Python DefaultDict

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 List Comprehension in Python3 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 Python Ternary Operators Self in Python Python vs Java Python Modulo Python Packages Python Syntax Python Uses Python Logical Operators Python Multiprocessing Python History 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 Design patterns in python 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 Abstract design pattern in python Builder design pattern in python Prototype design pattern in Python Creational design patterns in Python

How to

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

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 Singleton design pattern in python

Python if statement

Python if statement

Decision making is an essential feature of any programming languages. Condition checking is the strength of decision making. Python provides many decision-making statements, such as:

  • If statement
  • If-else statement
  • elif statement

if statement

The if statement is the easiest conditional statement. It is used to test a particular condition. If the condition is true, a block of code (if statement block) will be executed.

Syntax:

if expression:  
    statement 

Flow chart of if statement: The flowchart of if statement is following

Flow chart of if statement

In the above flowchart, First it checks the condition if the condition is true, then conditional code(if statement) will be executed. If the condition is false, then first set of code after the end of the 'if' statement will be executed

Python programming language supposes any non-zero and non-null values as TRUE. If it is zero, then it is assumed as FALSE values.

Indentation in Python

Indentation is used to declare the block of code. All the statements of one block are intended at the same level indentation. Python doesn't allow the use of curly braces or parentheses for block-level code. Indentation makes programming simple and easy in Python.

Example: There are following the example of if statement

1. Write a program to check number is even

n = int(input("Enter the number:"))

if(n%2==0):

    print("The number is even")

  print("The number is odd")

Output:

Enter the number: 10
The number is even

2. Write a program to check the weight of the passenger’s luggage

weight = float(input("How many Kilograms(kg) does your luggage?: ")) 
if (weight <30): 
    print("You have charged ?300 for heavy luggage .") 
print("Thank you for your business.") 

Output:

How many Kilograms does your suitcase weigh?: 35
There is a 250 charge for heavy luggage.
Thank you for your business 

3. Write a program to print the largest number of the three numbers

a = int(input("Enter the First number:"))
b = int(input("Enter the Second number:"))
c = int(input("Enter the Third number:"))
 if(a>b) and (a>c):

    print(a, 'is largest number' )

if(b>a) and (b>c):

    print(b, 'is largest number')

if (c>a) and (c>b):  

    print(c, "c is largest"); 

Output:

Enter the First number: 100
Enter the Second number: 145
Enter the Third number: 200
200 is largest 

4. Write a program to check the given number is positive or negative

num = 3

if num >0:

    print(num, "is a positive number.")

    print("This is always printed.")

num = -1

if num >0:

    print(num, "is a positive number.")

    print("This is also always printed.")

Output:

3 is a positive number.
This is always printed.
This is also always printed. 



ADVERTISEMENT
ADVERTISEMENT