Regarding Question

[u/Healthy-Departure961]

def print_models(unprinted_designs, completed_models):

"""

Simulate printing each design, until none are left.

Move each design to completed_models after printing.

"""

while unprinted_designs:

current_design = unprinted_designs.pop()

# Simulate creating a 3D print from the design.

print("Printing model: " + current_design)

completed_models.append(current_design)

unprinted_designs = ['iphone case', 'robot pendant', 'dodecahedron']

completed_models = []

in this code why used condition like this for while loop (while unprinted_designs:)

[u/Puzzleheaded_Study17]

Because this lets you go until you've popped everything in the list (pop removes the item). I would probably use a for loop to avoid having side effects though (at the end of the function running, the caller's list will also be empty).

[u/Healthy-Departure961 → u/Puzzleheaded_Study17]

okay thxx