tests.py 文件源码

def test_help_command(self):
        # Regression test for SPARK-5464
        rdd = self.sc.parallelize(['{"foo":"bar"}', '{"foo":"baz"}'])
        df = self.spark.read.json(rdd)
        # render_doc() reproduces the help() exception without printing output
        pydoc.render_doc(df)
        pydoc.render_doc(df.foo)
        pydoc.render_doc(df.take(1))