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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 in_noninjected_file(self, file_path, content):
 """ Checks if a string exists in the file, sans the injected """

        if os.path.exists(file_path):
            file_content = codecs.open(file_path, encoding="utf-8").read()
            file_content = self.wrapper_match.sub(u"", file_content)
        else:
            file_content = ""
        return file_content.find(content) != -1