<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def wash_for_utf8(text, correct=True):
 """Return UTF-8 encoded binary string with incorrect characters washed away. :param text: input string to wash (can be either a binary or Unicode string) :param correct: whether to correct bad characters or throw exception """

    if isinstance(text, unicode):
        return text.encode('utf-8')

    errors = "ignore" if correct else "strict"
    return text.decode("utf-8", errors).encode("utf-8", errors)