<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def find_strings(self, string=".*"):
 """ Find strings by regex :param string: regular expression for the string to search for :rtype: generator of `StringAnalysis` """

        for s, sa in self.strings.items():
            if re.match(string, s):
                yield sa