def parse_char(char, invert=False):
    """Return symbols depending on the binary input
    
    Keyword arguments:
    char   -- binary integer streamed into the function
    invert -- boolean to invert returned symbols
    """
    if invert == False:
        if char == 0:
            return '.'
        elif char == 1:
            return '@'
    if char == 0:
        return '@'
    elif char == 1:
        return '.'