def getNumberDescription(n) -> str:
    """Return a description of the number n."""
    description = ""
    if isinstance(n, float):
        if n < 0:
            description += "negative "
        else:
            description += "non-negative "
        description += "float"
    elif isinstance(n, int):
        if n % 2 == 0:
            description += "even "
        else:
            description += "odd "
        description += "int"
    else:
        description += "not a number"
    return description


print("Testing getNumberDescription()...", end="")
assert getNumberDescription(124) == "even int"
assert getNumberDescription(123) == "odd int"
assert getNumberDescription(-124) == "even int"
assert getNumberDescription(-123) == "odd int"
assert getNumberDescription(-1.2) == "negative float"
assert getNumberDescription(1.2) == "non-negative float"
assert getNumberDescription(0.0) == "non-negative float"
assert getNumberDescription(0) == "even int"
assert getNumberDescription("yes") == "not a number"
print("Passed!")