DOC: change all sphinx-gallery section separators to # %%

This is so that IDEs will auto detect "cells" and make (re) running sub
sections of the code easier for development and debugging.

Author: tacaswell

examples/animation/animated_histogram.py

@@ -21,7 +21,7 @@
 data = np.random.randn(1000)
 n, _ = np.histogram(data, HIST_BINS)
 
-###############################################################################
+# %%
 # To animate the histogram, we need an ``animate`` function, which generates
 # a random set of numbers and updates the heights of rectangles. We utilize a
 # python closure to track an instance of `.BarContainer` whose `.Rectangle`
@@ -39,7 +39,7 @@ def animate(frame_number):
         return bar_container.patches
     return animate
 
-###############################################################################
+# %%
 # Using :func:`~matplotlib.pyplot.hist` allows us to get an instance of
 # `.BarContainer`, which is a collection of `.Rectangle` instances. Calling
 # ``prepare_animation`` will define ``animate`` function working with supplied

examples/animation/multiple_axes.py

@@ -70,7 +70,7 @@ def animate(i):
 
 plt.show()
 
-#############################################################################
+# %%
 #
 # .. admonition:: References
 #

examples/axes_grid1/demo_axes_hbox_divider.py

@@ -33,7 +33,7 @@
 
 plt.show()
 
-###############################################################################
+# %%
 # Using a `.VBoxDivider` to arrange subplots.
 #
 # Note that both axes' location are adjusted so that they have

examples/axes_grid1/demo_fixed_size_axes.py

@@ -8,7 +8,7 @@
 
 from mpl_toolkits.axes_grid1 import Divider, Size
 
-###############################################################################
+# %%
 
 
 fig = plt.figure(figsize=(6, 6))
@@ -26,7 +26,7 @@
 
 ax.plot([1, 2, 3])
 
-###############################################################################
+# %%
 
 
 fig = plt.figure(figsize=(6, 6))

examples/axes_grid1/inset_locator_demo.py

@@ -5,7 +5,7 @@
 
 """
 
-###############################################################################
+# %%
 # The `.inset_locator`'s `~.inset_locator.inset_axes` allows
 # easily placing insets in the corners of the axes by specifying a width and
 # height and optionally a location (loc) that accepts locations as codes,
@@ -43,7 +43,7 @@
 plt.show()
 
 
-###############################################################################
+# %%
 # The parameters *bbox_to_anchor* and *bbox_transform* can be used for a more
 # fine-grained control over the inset position and size or even to position
 # the inset at completely arbitrary positions.
@@ -100,7 +100,7 @@
 plt.show()
 
 
-###############################################################################
+# %%
 # In the above the axes transform together with 4-tuple bounding boxes has been
 # used as it mostly is useful to specify an inset relative to the axes it is
 # an inset to. However, other use cases are equally possible. The following

examples/axes_grid1/make_room_for_ylabel_using_axesgrid.py

@@ -17,7 +17,7 @@
 
 make_axes_area_auto_adjustable(ax)
 
-###############################################################################
+# %%
 
 fig = plt.figure()
 ax1 = fig.add_axes([0, 0, 1, 0.5])
@@ -31,7 +31,7 @@
 make_axes_area_auto_adjustable(ax1, pad=0.1, use_axes=[ax1, ax2])
 make_axes_area_auto_adjustable(ax2, pad=0.1, use_axes=[ax1, ax2])
 
-###############################################################################
+# %%
 
 fig = plt.figure()
 ax1 = fig.add_axes([0, 0, 1, 1])

examples/axes_grid1/scatter_hist_locatable_axes.py

@@ -63,7 +63,7 @@
 
 plt.show()
 
-#############################################################################
+# %%
 #
 # .. admonition:: References
 #

examples/axes_grid1/simple_axes_divider1.py

@@ -18,7 +18,7 @@ def label_axes(ax, text):
                    left=False, labelleft=False)
 
 
-##############################################################################
+# %%
 # Fixed axes sizes; fixed paddings.
 
 fig = plt.figure(figsize=(6, 6))
@@ -42,7 +42,7 @@ def label_axes(ax, text):
 ax4 = fig.add_axes(rect, axes_locator=div.new_locator(nx=2, nx1=4, ny=0))
 label_axes(ax4, "nx=2, nx1=4, ny=0")
 
-##############################################################################
+# %%
 # Axes sizes that scale with the figure size; fixed paddings.
 
 fig = plt.figure(figsize=(6, 6))

examples/axisartist/demo_floating_axes.py

@@ -145,7 +145,7 @@ def setup_axes3(fig, rect):
     return ax1, aux_ax
 
 
-##########################################################
+# %%
 fig = plt.figure(figsize=(8, 4))
 fig.subplots_adjust(wspace=0.3, left=0.05, right=0.95)
 

examples/color/color_by_yvalue.py

@@ -22,7 +22,7 @@
 ax.plot(t, smiddle, t, slower, t, supper)
 plt.show()
 
-#############################################################################
+# %%
 #
 # .. admonition:: References
 #