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

How to comment multiple lines in python?

How to comment multiple lines in python

There are two qualities that come up with every good and successful programmer-

i) Indenting the code

ii) Using comments in the code

Let us see how these two features add weight and sense to your code-

  1. Indentation is a good practice when you are writing a program because it helps us to comprehend the blocks of code present and we can easily rectify it if any sort of problem occurs in terms of its functionality.
  2. Comments are an integral part of our program since they add meaning to it and tell us about why certain keywords or functions are used.

In this article, we will discuss how we can add comments to our python program.

Two types of comments can be written-

  1. Single line comment
  2. A single-line comment provides a succinct one-line description of a single (particular line) of our program.
  3. These comments start with ‘#’ and written after our line of code.

Example-

How to comment multiple lines in python
 #function to print the message Hello World
 def msg():
     print("Hello World")
     print("HELLO WORLD")
     print("hello world")
     print("hELLo WoRld")
 msg()
 msg() 

OUTPUT-

How to comment multiple lines in python
  1. Multiple lines comment

Python doesn’t have a specific syntax for multi-line comments but consecutive lines can be commented using ‘#’.

We can also comment using multiline strings (triple quotes).

Let’s look at an example for a better understanding of how we can add comments in our program-

  1. Single line comments
How to comment multiple lines in python
 a=int(input("Enter the value of a: "))   #taking value of a from user
 b=int(input("Enter the value of b: "))   #taking value of b from user
 add=a+b                                  #adding a and b
 sub=a-b                                  #subtracting a and b
 mult=a*b                                 #multiplying a and b
 div=a/b                                  #dividing a and b
 #displaying results
 print("Result of {} + {} is {}".format(a,b,add))    
 print("Result of {} - {} is {}".format(a,b,sub))
 print("Result of {} * {} is {}".format(a,b,mult))
 print("Result of {} / {} is {}".format(a,b,div)) 

OUTPUT-

How to comment multiple lines in python
  • Multiline Comments

Here we have used a multiline string, let us see what output does it give?

 ''' 
 Tutorial & Examples is a good website for students.
 It covers all the topics and provides a great learning platform.
 Students must go through it once.
 '''
 print ('Python Programmers') 
How to comment multiple lines in python

OUTPUT-

How to comment multiple lines in python

In this program, we have assigned this multiline string to a variable and applied the split() function, on running the given program, it will return a list whose each element is obtained when a ‘/n’ escape character is found.

 a=''' 
 Tutorial & Examples is a good website for students.
 It covers all the topics and provides a great learning platform.
 Students must go through it once.
 '''
 print(a.split('\n')) 
How to comment multiple lines in python

OUTPUT-

How to comment multiple lines in python

Let us look at some examples for a better understanding of how we can use comments in python-

Program to find greatest among three numbers-

 n1=int(input("Enter 1st number: "))  #asking the value from user
 n2=int(input("Enter 2nd number: "))
 n3=int(input("Enter 3rd number: "))
 if(n1>n3 and n1>n2):                  #comparing the two variables
     print("{} is greatest".format(n1))  #displaying results
 elif(n2>n1 and n2>n3):
         print("{} is greatest".format(n2))
 else:
         print("{} is greatest".format(n3)) 

Program to calculate roots of a quadratic equation-

 a=int(input("Enter value of a : "))  #asking the value from user
 b=int(input("Enter value of b: "))
 c=int(input("Enter value of c: "))
 D=(b**2)-(4*a*c)                #calculating value of D
 d=2*a
 if(D>0):                       #comparing according to standard quadratic equation
     print("We will have real roots")
     r1=(-b+D**0.5)/d
     r2=(-b-D**0.5)/d
     print("The roots are {} and {}".format(r1,r2))
 elif(D==0):
     print("We will have equal roots")
     r1=-b/d
     print("Values of root1 and root2 is {}".format(r1))
 else:
     print("We will have imaginary roots") 

Program to print corresponding day of week

 dno=int(input("Enter a number between 1 to 7: ")) #asking the user to input a value
 if(dno==1):            #comparing the value
     print("Sunday")     #displaying the result
 elif(dno==2):
     print("Monday")
 elif(dno==3):
     print("Tuesday")
 elif(dno==4):
     print("Wednesday")
 elif(dno==5):
     print("Thursday")
 elif(dno==6):
     print("Friday")
 elif(dno==7):
     print("Saturday") 

Python program to calculate simple interest.

 p=int(input("Enter the principal: "))     #user enters value of principal
 r=int(input("Enter the rate: "))             #user enters value of rate
 t=int(input("Enter the time: "))            #user enters value of time
 si=p*r*t/100
 print("The value for simple interest is {}".format(si)) 

Python program to calculate the volume of a cylinder.

 pi=3.14
 r=int(input("Enter the value of radius: ")) #user enters the value of radius
 h=int(input("Enter the value of height: "))
 vol=pi*pow(r,2)*h                                     #calculating volume
 print("Volume of cylinder is {}".format(vol))      

Python program to calculate the area of the circle.

 pi=3.14
 r=int(input("Enter the value of radius: ")) #user inputs the value of radius
 area=pi*r*r                                               #calculating area
 print("Area of circle is {}".format(area)) 

Python program to calculate distance between two points.

 x1=int(input("Enter the x-coordinate of first point: ")) #entering x coordinate
 y1=int(input("Enter the y-coordinate of first point: ")) #entering y coordinate
 x2=int(input("Enter the x-coordinate of second point: "))
 y2=int(input("Enter the x-coordinate of second point: "))
 dist=((x2-x1)**2+(y2-y1)**2)**0.5
 print("The calculated distance is {}".format(dist)) 



ADVERTISEMENT
ADVERTISEMENT