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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 find(self, compile_failure_log, target):
 """Find missing deps on a best-effort basis from target's transitive dependencies. Returns (class2deps, no_dep_found) tuple. `class2deps` contains classname to deps that contain the class mapping. `no_dep_found` are the classnames that are unable to find the deps. """

    not_found_classnames = [err.classname for err in
                            self.compile_error_extractor.extract(compile_failure_log)]
    return self._select_target_candidates_for_class(not_found_classnames, target)