bigquery.datalab-migration.samples_test: test_datalab_query_magic_results_variable failed

[flaky-bot]

This test failed!

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---

commit: ca6200a
buildURL: Build Status, Sponge
status: failed

[tmatsuo]

Failing only with Python 3.8.

From the log:

__________________ test_datalab_query_magic_results_variable ___________________
Traceback (most recent call last):
  File "/tmpfs/src/github/python-docs-samples/bigquery/datalab-migration/samples_test.py", line 132, in test_datalab_query_magic_results_variable
    assert variable_name in ip.user_ns  # verify that variable exists
AssertionError: assert 'my_variable' in {'In': [''], 'Out': {1:               word  count\n0   correspondence      1\n1        esteeming      1\n2         wanton...XLIV      1\n97          CXLIII      1\n98        overturn      1\n99            LVII      1\n\n[100 rows x 2 columns], ...}
 +  where {'In': [''], 'Out': {1:               word  count\n0   correspondence      1\n1        esteeming      1\n2         wanton...XLIV      1\n97          CXLIII      1\n98        overturn      1\n99            LVII      1\n\n[100 rows x 2 columns], ...} = <IPython.terminal.interactiveshell.TerminalInteractiveShell object at 0x7fcdc06a4dc0>.user_ns
----------------------------- Captured stdout call -----------------------------
---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
/usr/local/lib/python3.8/codeop.py in __call__(self, source, filename, symbol)
    131 
    132     def __call__(self, source, filename, symbol):
--> 133         codeob = compile(source, filename, symbol, self.flags, 1)
    134         for feature in _features:
    135             if codeob.co_flags & feature.compiler_flag:

TypeError: required field "type_ignores" missing from Module