Cannot 'break' from a "for" loop in a right place

[bowlofred]

break will only break out of the innermost loop.

for outer in ["A", "B", "C"]:
    for inner in ["1", "2", "3"]:
        print(outer + inner)
        if True:
            break  #exits the inner loop, but runs the next entry in the outer loop

Output:
A1
B1
C1

It looks like for your program you want to exit the outer loop. The way I suggested to do that was set a variable, then break out of the inner loop and check in the outer loop if you should exit.

all_done = False
for outer in ["A", "B", "C"]:
    for inner in ["1", "2", "3"]:
        print(outer + inner)
        if True:
            all_done = True
            break
    if all_done:  # if the inner loop set this variable, then we break the outer loop as well
        break

Output:
A1