range()を作る

custom_range.py

#
# Custom range() implementation
#

class CustomRange:

    def __init__(self, start: int, end: int, pace: int = 1) -> None:
        self.end = end
        self.pace = pace

        self.current = start

    def __iter__(self):
        return self

    def __next__(self) -> int:
        current = self.current

        if current + self.pace > self.end:
            raise StopIteration

        self.current += self.pace
        return current


custom_range = CustomRange(0, 100, 2)

for n in custom_range:
    print(n)