felixcheung commented on issue #23730: [SPARK-26822]Upgrade the deprecated module 'optparse' URL: https://github.com/apache/spark/pull/23730#issuecomment-460107666 ``` Traceback (most recent call last): File "./python/run-tests.py", line 319, in <module> main() File "./python/run-tests.py", line 227, in main opts = parse_opts() File "./python/run-tests.py", line 176, in parse_opts help="A comma-separated list of Python executables to test against (default: %default)" File "/home/anaconda/envs/py3k/lib/python3.4/argparse.py", line 1340, in add_argument raise ValueError('%r is not callable' % (type_func,)) ValueError: 'string' is not callable ```
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