What is the difference between for and while loop in Python?

for loops is used when you have definite itteration (the number of iterations is known). while loop is an indefinite itteration that is used when a loop repeats unkown number of times and end when some condition is met.

What is difference between for loop and while loop?

For loop vs While loop The difference between for loop and while loop is that in for loop the number of iterations to be done is already known and is used to obtain a certain result whereas in while loop the command runs until a certain condition is reached and the statement is proved to be false.

Which is better for loop or while loop in Python?

Using Pure Python In this case, the for loop is faster, but also more elegant compared to while. Please, have in mind that you can’t apply list comprehensions in all cases when you need loops. Some more complex situations require the ordinary for or even while loops.

What are the differences between for and while loops when would you use a for loop when would you use a while loop?

In general, you should use a for loop when you know how many times the loop should run. If you want the loop to break based on a condition other than the number of times it runs, you should use a while loop.

Which loop is faster in Python?

An implied loop in map() is faster than an explicit for loop; a while loop with an explicit loop counter is even slower. Avoid calling functions written in Python in your inner loop.

Why do we use while loop?

The while loop is used to repeat a section of code an unknown number of times until a specific condition is met. For example, say we want to know how many times a given number can be divided by 2 before it is less than or equal to 1. additionally, keep a count of how many times we do the division.

What does a for loop do?

A “For” Loop is used to repeat a specific block of code a known number of times. For example, if we want to check the grade of every student in the class, we loop from 1 to that number.

Is Python really that slow?

While Python is slower than many compiled languages, it’s easy to use and extremely diverse. We noticed that, for many, the practicality of the language beats the speed considerations.

Why use Python if it is so slow?

First and foremost reason why Python is much popular because it is highly productive as compared to other programming languages like C++ and Java. For instance, Python programs are slower than Java, but they also take very less time to develop, as Python codes are 3 to 5 times shorter than Java codes.

What’s the difference between for and while loops in Python?

There are some significant differences among for and while loops, which are clarified further with the assistance of a comparison chart. It allows initialization, condition checking and iteration statements are written on the top of the loop. It only allows initialization and condition checking at the top of the loop.

What’s the difference between for and while in Python?

Main differences between “for” and “while” loop Initialization, conditional checking, and increment or decrement is done while iteration in “for” loop executed. while on the other hand, only initialization and condition checking in the syntax can be done.

When to use ” for ” and ” while ” in a loop?

In this post, we will understand the difference between the ‘for’ and the ‘while’ loop. The initialization, condition checking, and the iteration statements are written at the beginning of the loop. It is used only when the number of iterations is known beforehand.

What’s the difference between while and iteration in Python?

If initialization is done while condition checking, then it si required each time when the loop iterates itself. As iteration is statement is written at the top, it will execute only after all the statements will be executed. The iteration statement can be placed anywhere in the syntax of the loop.