def is_key_length_fixed(input_dict):
    """Check if the input dictionary keys are same-length.

    Args:
        input_dict (dict): dictionary.

    Returns:
        bool: boolean variable indicating whether dict keys are same-length or not.
    """
    key_length = len(list(input_dict.keys())[0])
    return all(len(key) == key_length for key in input_dict.keys())