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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def decode_input(text_in):
 """ Decodes `text_in` If text_in is is a string, then decode it as utf-8 string. If text_in is is a list of strings, then decode each string of it, then combine them into one outpust string. """

    
    if type(text_in) == list:
        text_out = u' '.join([t.decode('utf-8') for t in text_in])
    else:
        text_out = text_in.decode('utf-8')
    return text_out