class FileIterator:
    def __init__(self, filename: str):
        self.filename = filename
        self.file = open(filename, "r", encoding="utf8")

    def __iter__(self):
        return self

    def __next__(self):
        line = self.file.readline()
        if not line:
            self.file.close()
            raise StopIteration

        return line.strip()

iter = FileIterator("osoby.txt")
print(next(iter))
print("---" * 10)

for line in iter:
    print(line)

# print(next(iter))