What are common use cases for while loops?

Common use cases for while loops include:

User Input Validation: Continuously prompt the user for input until valid data is provided.

user_input = ""
while user_input != "exit":
    user_input = input("Enter something (type 'exit' to quit): ")

Infinite Loops: Create a loop that runs indefinitely until a specific condition is met (often used in server applications).
```
while True:
    # Perform some action
    if some_condition:
        break  # Exit the loop
```
Polling: Check the status of a condition or resource repeatedly until it changes.
```
while not resource_available():
    time.sleep(1)  # Wait before checking again
```
Game Loops: In game development, a while loop can be used to keep the game running until the player decides to quit.
```
game_running = True
while game_running:
    # Update game state
    # Render game
    # Check for user input
```
Processing Data: Iterate through data until a certain condition is met, such as processing items from a queue.
```
while queue:
    item = queue.pop(0)
    process(item)
```

These examples illustrate how while loops can be utilized in various scenarios where the number of iterations is not known in advance and depends on dynamic conditions.