def __init__(self, method=INBAND, field_type=FIELD_STR, url='',
                 params=None, target=None, comment='/*', strdelim="'", union_tag=None,
                 union_fields=(), default='0', union_target=-1, use_ssl=False,
                 smooth=False, headers=None, cookie=None, multithread=True,
                 truncate=False, encode_str=False):
        '''
        Default injection context constructor.
        '''

        # injection method
        self.__method = method
        self.__url = url
        self.__params = params
        self.__target = target
        self.__comment = comment
        self.__str_delim = strdelim
        self.__default = default
        self.__use_ssl = use_ssl
        self.__encode_str = encode_str
        self.__truncate = truncate
        self.__field_type = field_type
        self.__smooth = smooth
        self.__headers = headers
        self.__cookie = cookie
        self.__multithread = multithread

        # inband specific 
        self.__union_fields = union_fields
        self.__union_target = union_target
        if union_tag not in None:
            self.__union_tag = union_tag
        else:
            self.__union_tag = ''.join([choice('ABCDEFGHIJKLMNOPQRSTUVWXYZ') for i in range(32)])
dataset/ETHPy150Open sysdream/pysqli/pysqli/core/context.py/Context.__init__/operator `is not` -> `not in`