def __init__(self, string, search_string, pattern, feedback):
super().__init__(feedback)<EOL>self.string = string<EOL>self.search_string = search_string<EOL>self.pattern = pattern<EOL>
Initialize with a string to look for, a string to search and whether or not to look for a pattern.

Args:
    string (regex/str):  The string to look for will be set to this.
    search_string (str): The string to search in will be set to this.
    pattern (bool): The pattern boolean will be set to this.
    feedback (str): The failure message will be set to this.