[yt-dev] Issue #650: load helper should fallback to test_data_dir (yt_analysis/yt)

[Kacper Kowalik]

New issue 650: load helper should fallback to test_data_dir
https://bitbucket.org/yt_analysis/yt/issue/650/load-helper-should-fallback-to

Kacper Kowalik:

This is related to [PR99](https://bitbucket.org/yt_analysis/yt-doc/pull-request/99/adding-colormaps-page/diff). I've initially wanted to as @chummels to modify his `cmap_images.py` script as follows:


```
#!diff
--- a/cmap_images.py
+++ b/cmap_images.py
@@ -1,8 +1,9 @@
 from yt.mods import *
 import matplotlib.cm as cm
-
+import os
 # Load the dataset.
-pf = load("IsolatedGalaxy/galaxy0030/galaxy0030")
+pf = load(os.path.join(ytcfg.get("yt", "test_data_dir"),
+                       "IsolatedGalaxy/galaxy0030/galaxy0030"))

 # Create projections using each colormap available.
```
Then I thought that if we could make `load` fallback to that path if `args` doesn't exists, that would come handy for docstrings tests.

Responsible: xarthisius