What is the role of indentation in python

How to Indent and Dedent Your Python Code - dummies For example, if you want to move a print statement from the main part of the program into the code block of a loop, you need to indent it. To move it out of the code block of a loop, you need to deindent it. IDLE has tools to indent and dedent code blocks. Try those -denting tools: • Start with some code. Here's some: ""This is just a test file"" DEBUG = True print('Hello World! from the editor') # hashes are used for comments too "" You usually use hashes at the end of a line rather than for a block comment like this one. "" ############################################################### # Nevertheless you can still use hashes for block comments # Especially if you want to have a specific visual effect ############################################################### if DEBUG: print('I think I need another print statement in this code block') print('See that the comments were ignored?') # even this one • Select the lines to indent. Click and drag with your mouse to select the code (the last print statement), or press Shift while using your arrow keys. • Choose Format → Indent Region. Ctrl+] also works. • Make sure the code's indented into a valid code block. Indentation is meaningful to Python. You'll get a syntax error if you have the wrong level of indent. It's best to use four spaces of indent for each code block level. If you use another number of spaces (2, 6, 8), that's fine. The important thing is that all the code...

Overview Indentation in Python is simply the spaces at the beginning of a code line. Indentation in other languages like C, C++, etc., is just for readability, but in Python, the indentation is an essential and mandatory concept that should be followed when writing a python code; otherwise, the python interpreter throws IndentationError. Scope of article • In this part of • We will learn a few rules on indentation with some example codes. • Then, we will discuss some advantages and disadvantages of indentation. What is Indentation in Python Indentation is the leading whitespace ( spaces or/and tabs) before any statement in , in python a block is a group of statements that have the same Indentation level i.e same number of leading whitespaces. Below are some of the observations that can be made from the above figure: • All the statements which are on the same level of Indentation(Same no of whitespaces before them) belong to a single block, so from the above diagram, statements in line 1, line 2, and line 7 belong to a single block, and the block has the zero or lowest level of indentation. Statements 3 and 5 are indented one step, forming another block at the first level of indentation. Similarly, statements 4 and 6 are indented two steps, so they together form another block at the second level of indentation. • Below the line 2 statement, which is an if statement, statements 3 and 5 are indented one step; hence, they belong to a single block. And since line 2 is an if sta...

And, The importance of indentation in Python is much more than that in other programming languages. Let’s see. How? In this article, you’ll learn : 1. What is indentation in Python? 2. How does Python indentation work? 3. How to indent your Python code? 4. What is the role of indentation in Python? (Why is indentation used?) 5. Why is Python indentation important? (Including examples) So, Let’s dive right in! What is Indentation in Python? Before diving into the actual definition or meaning of Indentation in Python, I want to ask you a question. So, Are you Ready? Here we go! The question is: Do you know what is the meaning of indentation in English dictionary? Now, You might be wondering that, why I am asking this question here. Right? I am asking only because, the meaning of indentation in English dictionary and in Python is almost similar. So, If you know one definition, then it’s going to be much easier to understand the meaning of other. In English dictionary: Indentation simply means, adding some blank spaces between the beginning of the first character of a written text in a line and the margin. Similarly, In Python: Indentation refers to the spaces that are added at the beginning of a statement in our code. And, as we already know, each and every line of code is called a statement. Now, One more question arises here, How much spaces you can use for indenting a statement or a block of code? Ans: You can use any number of spaces for indentation, It is up to you, but ...

Indentation improves the readability of the code. It is mainly used for code inside looping statements, control structures, functions etc. as good intended code is easy to maintain and is good looking. It makes the code more readable and easy to understand. Some programming languages like Some Rules for indentation are: Output: GeeksforGeeks GeeksforGeeks GeeksforGeeks GeeksforGeeks GeeksforGeeks GeeksforGeeks GeeksforGeeks GeeksforGeeks GeeksforGeeks GeeksforGeeks Documentation Documentation is a very important aspect of programming. Good documentation in programs make it easy for user to read and understand the code. This is done by inserting comments in the necessary places to make the code readable and more understandable for user. Documentation is basically for users of the code to understand it even without the help of programmer. Add Comments in code and explain the code line and the code will be well Documented. Example: Program Maintenance Once the Program is made, it is saved and stored as a software package. After some time if the program needs improvement or modification, the saved program is modified and saves effort and time as programs need not to made from the very beginning. Hence Modifications will meet the purpose only. Program maintenance is done as: • Keep the last program. • Modify the program for required improvements. • Do not make new program from scratch, just use the last saved program. • Save time and effort.

LinkedIn and 3rd parties use essential and non-essential cookies to provide, secure, analyze and improve our Services, and to show you relevant ads (including professional and job ads) on and off LinkedIn. Learn more in our Select Accept to consent or Reject to decline non-essential cookies for this use. You can update your choices at any time in your Welcome back to another exciting episode on Python Programming! In this edition, we are going to uncover a secret that will elevate your Python programming skills to a whole new level. Let's jump into the world of indentation - a simple yet powerful concept that brings clarity, structure, and elegance to your code. Learning Objectives By the end of this article, you will: • Understand the concept and importance of indentation in Python programming. • Be able to use indentation to structure conditional statements and loops effectively. • Apply proper indentation techniques to create clean and organized code. • Appreciate the significance of readability and maintainability in programming. What is Indentation? Imagine reading a book without any paragraphs or spaces between sentences. Challenging, isn't it? Similarly, in Python programming, indentation acts as a visual clue to separate blocks of code and make it easier for humans (and computers!) to understand. It involves using spaces or tabs at the beginning of lines to indicate the hierarchy and structure of your code. Why is Indentation Important? Indentation is more than jus...

It is generally good practice for you not to mix tabs and spaces when coding in Python. Doing this can possibly cause a TabError, and your program will crash. Be consistent when you code - choose either to indent using tabs or spaces and follow your chosen convention throughout your program. Code Blocks and Indentation One of the most distinctive features of Python is its use of indentation to mark blocks of code. Consider the if-statement from our simple password-checking program: if pwd == 'apple': print('Logging on ...') else: print('Incorrect password.') print('All done!') The lines print(‘Logging on …’) and print(‘Incorrect password.’) are two separate code blocks. These ones happen to be only a single line long, but Python lets you write code blocks consisting of any number of statements. To indicate a block of code in Python, you must indent each line of the block by the same amount. The two blocks of code in our example if-statement are both indented four spaces, which is a typical amount of indentation for Python. In most other programming languages, indentation is used only to help make the code look pretty. But in Python, it is required for indicating what block of code a statement belongs to. For instance, the final print(‘All done!’) is not indented, and so is not part of the else-block. Programmers familiar with other languages often bristle at the thought that indentation matters: Many programmers like the freedom to format their code how they please. Howeve...

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Your intuition is right, without i=i+1 the loop will execute indefinitely. Essentially, while is a keyword which starts a loop. Any loop in a programming language consists of the following basic elements: • loop variable (here, i) • loop condition or exit condition or repeat until (here, i<=4) • job/set of instructions to perform/repeat inside the loop now, if i=i+1 is not there, your loop condition is always true, and hence, it will execute indefinitely. Since, we want the task to repeat 5 times (i is in range 0-4), we need to increment the value of i with the statement i=i+1 everytime the loop has executed the set of statements. PS: You might want to refer to a beginners introduction to some programming resource. It is cristal clear from the code: i=0 # initially i is 0 while i<=4: # while i is less than or equal 4 continue looping t.fd(50) t.rt(144) i=i+1 # you increment to reach 5 at some point and stop #otherwise, `i` will stay at 0 and therefore `i<=4` condition will always be true Without i=i+1 the code is exactly like this: import turtle t=turtle.Turtle() t.shape('turtle') i=0 while True: t.fd(50) t.rt(144)

How to Indent and Dedent Your Python Code - dummies For example, if you want to move a print statement from the main part of the program into the code block of a loop, you need to indent it. To move it out of the code block of a loop, you need to deindent it. IDLE has tools to indent and dedent code blocks. Try those -denting tools: • Start with some code. Here's some: ""This is just a test file"" DEBUG = True print('Hello World! from the editor') # hashes are used for comments too "" You usually use hashes at the end of a line rather than for a block comment like this one. "" ############################################################### # Nevertheless you can still use hashes for block comments # Especially if you want to have a specific visual effect ############################################################### if DEBUG: print('I think I need another print statement in this code block') print('See that the comments were ignored?') # even this one • Select the lines to indent. Click and drag with your mouse to select the code (the last print statement), or press Shift while using your arrow keys. • Choose Format → Indent Region. Ctrl+] also works. • Make sure the code's indented into a valid code block. Indentation is meaningful to Python. You'll get a syntax error if you have the wrong level of indent. It's best to use four spaces of indent for each code block level. If you use another number of spaces (2, 6, 8), that's fine. The important thing is that all the code...

It is generally good practice for you not to mix tabs and spaces when coding in Python. Doing this can possibly cause a TabError, and your program will crash. Be consistent when you code - choose either to indent using tabs or spaces and follow your chosen convention throughout your program. Code Blocks and Indentation One of the most distinctive features of Python is its use of indentation to mark blocks of code. Consider the if-statement from our simple password-checking program: if pwd == 'apple': print('Logging on ...') else: print('Incorrect password.') print('All done!') The lines print(‘Logging on …’) and print(‘Incorrect password.’) are two separate code blocks. These ones happen to be only a single line long, but Python lets you write code blocks consisting of any number of statements. To indicate a block of code in Python, you must indent each line of the block by the same amount. The two blocks of code in our example if-statement are both indented four spaces, which is a typical amount of indentation for Python. In most other programming languages, indentation is used only to help make the code look pretty. But in Python, it is required for indicating what block of code a statement belongs to. For instance, the final print(‘All done!’) is not indented, and so is not part of the else-block. Programmers familiar with other languages often bristle at the thought that indentation matters: Many programmers like the freedom to format their code how they please. Howeve...