Monkey-patch scipy.special to fool PyDSTool

Author: tkf

src/_pydstool_jl_hack.py

@@ -1,8 +1,34 @@
-import scipy
+import scipy.special
+
+# Old sph_* removed in SciPy 1.0:
+# https://docs.scipy.org/doc/scipy/reference/release.1.0.0.html#backwards-incompatible-changes
+old_special_funcs = [
+    'sph_jn',
+    'sph_yn',
+    'sph_jnyn',
+    'sph_in',
+    'sph_kn',
+    'sph_inkn',
+]
+
 
 original_version = scipy.__version__
 try:
+
+    # Fool how PyDSTool checks SciPy's version number:
     scipy.__version__ = '0.9'
+
+    # PyDSTool tries to access `scipy.special.sph_*`; let's not fail
+    # by that by setting them to None.  Those functions won't be
+    # usable, but at least (hopefully) other PyDSTool functionalities
+    # are usable:
+    for name in old_special_funcs:
+        if not hasattr(scipy.special, name):
+            setattr(scipy.special, name, None)
+
     import PyDSTool
 finally:
     scipy.__version__ = original_version
+    for name in old_special_funcs:
+        if getattr(scipy.special, name) is None:
+            delattr(scipy.special, name)