notebook execution fails if there's anything in stdout

[edublancas]

ploomber-core 0.2.17 introduced a change to print a Ploomber Cloud link at a regular interval. However, this breaks notebook execution.

We realized this because one of our automated notebooks started failing:

  0%|          | 0/90 [00:00<?, ?it/s]
Executing cell: 1:   0%|          | 0/90 [00:00<?, ?it/s]
Executing cell: 1:   2%|▏         | 2/90 [00:00<00:16,  5.40it/s]
Executing cell: 2:   2%|▏         | 2/90 [00:00<00:16,  5.40it/s]
Executing cell: 2:   2%|▏         | 2/90 [00:01<00:46,  1.89it/s]





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An error happened while executing the notebook. Partially executed notebook stored at report.ipynb
Traceback (most recent call last):
  File "/usr/share/miniconda3/bin/ploomber-engine", line 8, in <module>
    sys.exit(cli())
             ^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/click/core.py", line 1157, in __call__
    return self.main(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/click/core.py", line 1078, in main
    rv = self.invoke(ctx)
         ^^^^^^^^^^^^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/click/core.py", line 1434, in invoke
    return ctx.invoke(self.callback, **ctx.params)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/click/core.py", line 783, in invoke
    return __callback(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/ploomber_engine/cli.py", line 106, in cli
    execute_notebook(
  File "/usr/share/miniconda3/lib/python3.11/site-packages/ploomber_core/telemetry/telemetry.py", line 679, in wrapper
    result = func(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/ploomber_engine/execute.py", line 179, in execute_notebook
    out = client.execute(parameters=parameters)
          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/ploomber_engine/ipython.py", line 498, in execute
    self._execute()
  File "/usr/share/miniconda3/lib/python3.11/site-packages/ploomber_engine/ipython.py", line 621, in _execute
    self.execute_cell(
  File "/usr/share/miniconda3/lib/python3.11/site-packages/ploomber_engine/ipython.py", line 424, in execute_cell
    output.extend(_process_stdout(stdout, result=result))
                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/share/miniconda3/lib/python3.11/site-packages/ploomber_engine/ipython.py", line 68, in _process_stdout
    output_type="stream", text="".join(out), name="stdout"
                               ^^^^^^^^^^^^
TypeError: sequence item 0: expected str instance, bytes found
Closing duckdb://

I replicated it by removing the last_cloud_check from ~/.ploomber/stats/uid.yaml and then tried to run a notebook. The fix should allow successful execution of notebooks even if there are prints to stdout