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- Basic Python While Loop. Let’s go over a simple Python while loop example to understand its structure and functionality: >>> i = 0 >>> while i < 5: >>> print(i) >>> i += 1.
- Using a Counter in a while Loop. We don’t always know beforehand how many times the code inside a while loop will be executed. Hence, it’s a good practice to set up a counter inside the loop.
- A while Loop with a List. Although for loops are preferred when you want to loop over a list, we can also use a while loop for this task. If we do, we need to set the while loop condition carefully.
- A while Loop with a Dictionary. Constructing a while loop with a dictionary is similar to constructing a while loop with a list. However, we need a couple of extra operations because a dictionary is a more complex data structure.
Python has two primitive loop commands: while loops. for loops. The while Loop. With the while loop we can execute a set of statements as long as a condition is true. Example Get your own Python Server. Print i as long as i is less than 6: i = 1. while i < 6: print(i) i += 1. Try it Yourself »
- Example of using while loops in Python. n = 1 while n < 5: print("Hello Pythonista") n = n+1.
- Example of using the break statement in while loops. In Python, we can use the break statement to end a while loop prematurely. n = 1 while n < 5: print("Hello Pythonista") n = n+1 if n == 3: break.
- Example of using the continue statement in while loops. In Python, we can use the continue statement to stop the current iteration of the while loop and continue with the next one.
- Using if-elif-else statements inside while loop. z = 0 while z < 3: if z == 0: print("z is",z) z += 1 elif z == 1: print("z is",z) z += 1 else: print("z is",z) z += 1.
Sep 18, 2023 · In Python, there are two different types of loops: the for loop, and the while loop. Each loop has its own way of executing and exiting, and knowing when to use the correct loop is an important skill for beginner programmers. In this comprehensive guide, we’ll explain all you need to know about looping in Python.
- While Loop Syntax
- Flowchart of Python While Loop
- Infinite While Loop
Here, 1. The while loop evaluates condition, which is a boolean expression. 2. If the condition is True, body of while loopis executed. The condition is evaluated again. 3. This process continues until the condition is False. 4. Once the condition evaluates to False, the loop terminates. Tip: We should update the variables used in condition inside ...
Example: Python while Loop
Output Here is how the above program works: 1. It asks the user to enter a number. 2. If the user enters a number other than 0, it is printed. 3. If the user enters 0, the loop terminates.
If the condition of a while loop always evaluates to True, the loop runs continuously, forming an infinite while loop. For example, Output The above program is equivalent to: Also Read: 1. Python if...else Statement
Apr 27, 2021 · You will find a thorough description of Python syntax and lots of code examples to guide you during your coding journey. What we will cover: Variable Definitions in Python. Hello, World! Program in Python. Data Types and Built-in Data Structures in Python. Python Operators. Conditionals in Python. For Loops in Python. While Loops in Python.
This can be a late reply but might be useful for beginners in Python, you can use threading events to wait until the certain condition is true and execute the reaming block of code after the conditions are met. here are some references for the same : https://superfastpython.com/thread-event-object-in-python/.
