from typing import List, Tuple from garbageCan import GarbageCan class Node: garbageCan: GarbageCan id: int def __init__(self, id: int, can: GarbageCan) -> None: self.id = id self.can = can class City: nodes: List[Node] streets: List[Tuple[int, int]] def __init__(self) -> None: self.nodes = [] self.streets = [] def add_node(self, node: Node) -> None: self.nodes.append(node) def add_street(self, street: Tuple[int, int]) -> None: firstFound: bool = False secondFound: bool = False for node in self.nodes: if firstFound and secondFound: break if node.id == street.__getitem__(0): firstFound = True continue if node.id == street.__getitem__(1): secondFound = True if not firstFound or not secondFound: return self.streets.append(street)