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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 _parse_array(value):
 """Coerce value into an list. :param str value: Value to parse. :returns: list or None if the value is not a JSON array :raises: TypeError or ValueError if value appears to be an array but can't be parsed as JSON. """

    value = value.lstrip()
    if not value or value[0] not in _bracket_strings:
        return None
    return json.loads(value)