Loops and Iteration
Guidance
- Flatten nested loops with iterator helpers when it improves clarity.
- Prefer iterator tools like itertools for structured iteration.
Bad Example
def find_twelve(num_list1, num_list2, num_list3):
"""Find three numbers that sum to 12."""
for num1 in num_list1:
for num2 in num_list2:
for num3 in num_list3:
if num1 + num2 + num3 == 12:
return num1, num2, num3
Good Example
from itertools import product
def find_twelve_v2(num_list1, num_list2, num_list3):
for num1, num2, num3 in product(num_list1, num_list2, num_list3):
if num1 + num2 + num3 == 12:
return num1, num2, num3