"""Convert a Decimal Number to a Binary Number."""⏎
⏎
⏎
def decimal_to_binary(num: int) -> str:⏎
⏎
    """⏎
        Convert a Integer Decimal Number to a Binary Number as str.⏎
        >>> decimal_to_binary(0)⏎
        '0b0'⏎
        >>> decimal_to_binary(2)⏎
        '0b10'⏎
        >>> decimal_to_binary(7)⏎
        '0b111'⏎
        >>> decimal_to_binary(35)⏎
        '0b100011'⏎
        >>> # negatives work too⏎
        >>> decimal_to_binary(-2)⏎
        '-0b10'⏎
        >>> # other floats will error⏎
        >>> decimal_to_binary(16.16) # doctest: +ELLIPSIS⏎
        Traceback (most recent call last):⏎
        ...⏎
        TypeError: 'float' object cannot be interpreted as an integer⏎
        >>> # strings will error as well⏎
        >>> decimal_to_binary('0xfffff') # doctest: +ELLIPSIS⏎
        Traceback (most recent call last):⏎
        ...⏎
        TypeError: 'str' object cannot be interpreted as an integer⏎
    """⏎
⏎
    if type(num) == float:⏎
        raise TypeError("'float' object cannot be interpreted as an integer")⏎
    if type(num) == str:⏎
        raise TypeError("'str' object cannot be interpreted as an integer")⏎
⏎
    if num == 0:⏎
        return "0b0"⏎
⏎
    negative = False⏎
⏎
    if num < 0:⏎
        negative = True⏎
        num = -num⏎
⏎
    binary = []⏎
    while num > 0:⏎
        binary.insert(0, num % 2)⏎
        num >>= 1⏎
⏎
    if negative:⏎
        return "-0b" + "".join(str(e) for e in binary)⏎
⏎
    return "0b" + "".join(str(e) for e in binary)⏎
⏎
⏎
if __name__ == "__main__":⏎
    import doctest⏎
⏎
    doctest.testmod()⏎