Review for my Fibonacci sequence, please. (´｡• ω •｡`)

[Gribouillis]

1) I think your code is quite self-explanatory, that's a good point.

2) The interaction loop could be written this way, so that the exception catches the exact conversion that we want to check

if __name__ == '__main__':
    while True:
        user_input = input("Please, enter a limit for the sequence: ")
        try:
            limit = int(user_input)
        except ValueError:
            print(f"{user_input!r} is not an integer.")
        else:
            break
    print(fibonacci(limit))

You could use multiple assignment to avoid a temporary variable

def fibonacci(limit: int) -> 'Sequence in a List':
    n1, n2 = 0, 1
    sequence: list = []
    while n2 < limit:
        n1, n2 = n2, n1 + n2
        sequence.append(n2)
    return sequence

Finally, here is an screwball version for you to study

from itertools import accumulate, chain, takewhile, tee

def fibonacci(limit: int) -> "Sequence in a list":
    def S():
        yield from _s
    s, _s = tee(accumulate(chain((1, 0), S())))
    return list(takewhile(limit.__ge__, s))

if __name__ == '__main__':
    while True:
        user_input = input("Please, enter a limit for the sequence: ")
        try:
            limit = int(user_input)
        except ValueError:
            print(f"{user_input!r} is not an integer.")
        else:
            break
    print(fibonacci(limit))