def _conditions(self, full_path, environ):
        mtime = stat(full_path).st_mtime
        return str(mtime), rfc822.formatdate(mtime)
Given a gene id find its features in db.
dataset/ETHPy150Open cloudera/hue/tools/ace-editor/static.py/Cling._conditions--crossover with--dataset/ETHPy150Open daler/gffutils/gffutils/test/performance_test.py/PerformanceTestFeatureDB.test_find_genes