Asking for help, clarification, or responding to other answers. Using IF statement with While loop. the code carried out repeatedly is called the body of the loop. For example: traversing a list or string or array etc. A simple example may look like this: a = ["fizz", "baz", "buzz"] while a: print (a. pop (-1)) Become a Member to join the conversation. def get_random_gene_list(input, subset): genes_to_remove = set(random.sample(input, subset)) genes_to_use = list(set(input) - genes_to_remove) return (genes_to_use, genes_to_remove). Illustrator is dulling the colours of old files, Help modelling silicone baby fork (lumpy surfaces, lose of details, adjusting measurements of pins). Thanks. I ended up reading the file outside of the while loop as you suggested. ; for in Loop: For loops are used for sequential traversal. When the condition is tested and the result is false, the loop body will be skipped and the first statement after the while loop will be executed. Making statements based on opinion; back them up with references or personal experience. []. for-in: the usual way. Using For loop. In this program, we’ll ask for the user to input a password. myList = ['Ram', 'Shyam', 10, 'Bilal', 13.2, 'Feroz']; x=0; while x < len (myList): print (myList [x]) x += 1. How to use "For Loop" In Python, "for loops" are called iterators. Let’s see all the different ways to iterate over a list in Python, and performance comparison between them. Book about an AI that traps people on a spaceship. Otherwise, the loop will execute forever, creating an infinite/endless loop. The syntax of a while loop in Python programming language is −. “do while” loops do not exist in Python so we’ll focus on regular while loops. As I said in the post, I isolated the issue and did not bother posting the full function. In other words, we don’t have to worry about knowing how many items we have before we create our list. The code within the loop, i.e. In a while loop, you have to first initialize the variable to start the while loop. Python Program. In this python program, we are using For Loop to iterate each element in this List. Python enumerate() function can be used to iterate the list in an optimized manner. a = [52, 85, 41, 'sum', 'str', 3 + 5j, 6.8] i=0 while i