Example that fails to execute

This example demonstrates a code block that raises an error and how any code blocks that follow are not executed.

When scripts fail, their gallery thumbnail is replaced with the broken image stamp. This allows easy identification in the gallery display.

You will also get the python traceback of the failed code block.

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 # Code source: Óscar Nájera
 # License: BSD 3 clause
 # sphinx_gallery_line_numbers = True

 import numpy as np
 import matplotlib.pyplot as plt

 plt.pcolormesh(np.random.randn(100, 100))
plot raise

Out:

<matplotlib.collections.QuadMesh object at 0x7f1ed0639710>

This next block will raise a NameError

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 iae
Traceback (most recent call last):
  File "/home/circleci/project/examples/no_output/plot_raise.py", line 27, in <module>
    iae
NameError: name 'iae' is not defined

Sphinx gallery will stop executing the remaining code blocks after the exception has occurred in the example script. Nevertheless the html will still render all the example annotated text and code blocks, but no output will be shown.

Here is another error raising block but will not be executed

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 plt.plot('Strings are not a valid argument for the plot function')

Total running time of the script: ( 0 minutes 0.927 seconds)

Estimated memory usage: 431 MB

Gallery generated by Sphinx-Gallery