[doc] Fix dead links

Author: ksunden

doc/install/dependencies.rst

@@ -434,5 +434,5 @@ process will raise various warnings.
 
 * `Inkscape <https://inkscape.org>`_
 * `optipng <http://optipng.sourceforge.net>`_
-* the font `xkcd script <https://github.com/ipython/xkcd-font/>`_ or `Comic Neue <http://comicneue.com/>`_
+* the font `xkcd script <https://github.com/ipython/xkcd-font/>`_ or `Comic Neue <https://github.com/crozynski/comicneue>`_
 * the font "Times New Roman"

doc/users/resources/index.rst

@@ -54,8 +54,8 @@ Videos
   <https://www.youtube.com/watch?v=3Fp1zn5ao2M&feature=plcp>`_ by Eric Jones
 
 * `Anatomy of Matplotlib
-  <https://conference.scipy.org/scipy2013/tutorial_detail.php?id=103>`_
-  by Benjamin Root
+  <https://www.youtube.com/watch?v=6gdNUDs6QPc>`_
+  by Benjamin Root and Hannah Aizenman
 
 * `Data Visualization Basics with Python (O'Reilly)
   <https://www.oreilly.com/library/view/data-visualization-basics/9781771375573/>`_

galleries/examples/misc/image_thumbnail_sgskip.py

@@ -7,7 +7,7 @@
 Matplotlib relies on Pillow_ for reading images, and thus supports all formats
 supported by Pillow.
 
-.. _Pillow: https://python-pillow.org/
+.. _Pillow: https://python-pillow.github.io
 """
 
 from argparse import ArgumentParser

galleries/users_explain/axes/arranging_axes.py

@@ -308,7 +308,7 @@ def annotate_axes(ax, text, fontsize=18):
 # -------------------------------------
 #
 # We can index the *spec* array using `NumPy slice syntax
-# <https://numpy.org/doc/stable/reference/arrays.indexing.html>`_
+# <https://numpy.org/doc/stable/user/basics.indexing.html>`_
 # and the new Axes will span the slice.  This would be the same
 # as ``fig, axd = plt.subplot_mosaic([['ax0', 'ax0'], ['ax1', 'ax2']], ...)``:
 

galleries/users_explain/figure/backends.rst

@@ -211,7 +211,7 @@ wxAgg     Agg rendering to a wxWidgets_ canvas (requires wxPython_ 4).
 .. _`Scalable Vector Graphics`: https://en.wikipedia.org/wiki/Scalable_Vector_Graphics
 .. _pgf: https://ctan.org/pkg/pgf
 .. _Cairo: https://www.cairographics.org
-.. _PyGObject: https://wiki.gnome.org/action/show/Projects/PyGObject
+.. _PyGObject: https://pygobject.gnome.org/
 .. _pycairo: https://www.cairographics.org/pycairo/
 .. _cairocffi: https://doc.courtbouillon.org/cairocffi/stable/
 .. _wxPython: https://www.wxpython.org/

galleries/users_explain/figure/writing_a_backend_pyplot_interface.rst

@@ -107,7 +107,7 @@ module:// syntax
 Any backend in a separate module (not built into Matplotlib) can be used by
 specifying the path to the module in the form ``module://some.backend.module``.
 An example is ``module://mplcairo.qt`` for
-`mplcairo <https:////github.com/matplotlib/mplcairo>`_.  The backend's
+`mplcairo <https://github.com/matplotlib/mplcairo>`_.  The backend's
 interactive framework will be taken from its
 ``FigureCanvas.required_interactive_framework``.
 

lib/matplotlib/cbook.py

@@ -615,9 +615,9 @@ def flatten(seq, scalarp=is_scalar_or_string):
         ['John', 'Hunter', 1, 23, 42, 5, 23]
 
     By: Composite of Holger Krekel and Luther Blissett
-    From: https://code.activestate.com/recipes/121294/
+    From: https://code.activestate.com/recipes/121294-simple-generator-for-flattening-nested-containers/
     and Recipe 1.12 in cookbook
-    """
+    """  # noqa: E501
     for item in seq:
         if scalarp(item) or item is None:
             yield item

lib/matplotlib/image.py

@@ -1713,7 +1713,7 @@ def thumbnail(infile, thumbfile, scale=0.1, interpolation='bilinear',
         thus supports a wide range of file formats, including PNG, JPG, TIFF
         and others.
 
-        .. _Pillow: https://python-pillow.org/
+        .. _Pillow: https://python-pillow.github.io
 
     thumbfile : str or file-like
         The thumbnail filename.

src/_tkagg.cpp

@@ -7,7 +7,7 @@
 // and methods of operation are now quite different.  Because our review of
 // the codebase showed that all the code that came from PIL was removed or
 // rewritten, we have removed the PIL licensing information.  If you want PIL,
-// you can get it at https://python-pillow.org/
+// you can get it at https://python-pillow.github.io
 
 #include <Python.h>
 #include <new>