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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 encode_params_utf8(params):
 """Ensures that all parameters in a list of 2-element tuples are encoded to bytestrings using UTF-8 """

    encoded = []
    for k, v in params:
        encoded.append((
            k.encode('utf-8') if isinstance(k, unicode_type) else k,
            v.encode('utf-8') if isinstance(v, unicode_type) else v))
    return encoded