Method in Python that outputs all instances of its class

First option, ugly

To exit a loop before its normal completion in Python, the break statement is used:

for item in items:    if some_condition:        break

To exit multiple loops based on a condition that occurs in the inner loop, an exit flag is used - a variable that initially has the value False, and when it is necessary to exit the loop prematurely, it takes the value True:

flag = Falsefor outer in outer_list: