fix getargspec deprecation in python 3.11

chumpy/ch.py

@@ -1189,7 +1189,11 @@ def compute_dr_wrt(self, wrt):
 #            return func(self, *args, **kwargs)
 #        return property(with_caching)
 #    return _depends_on
-
+def getargspec(func):
+    if hasattr(inspect, 'getargspec'): # backward compatibility
+        return inspect.getargspec(func)
+    else: # python 3.11 compatibility
+        return inspect.getfullargspec(func)
 
 def depends_on(*dependencies):
     deps = set()
@@ -1200,7 +1204,7 @@ def depends_on(*dependencies):
             [deps.add(d) for d in dep]
 
     def _depends_on(func):
-        want_out = 'out' in inspect.getargspec(func).args
+        want_out = 'out' in getargspec(func).args
 
         @wraps(func)
         def with_caching(self, *args, **kwargs):
@@ -1243,7 +1247,7 @@ def on_changed(self, which):
             self.args[argname].x = getattr(self, argname)
 
     def __init__(self, lmb, initial_args=None):
-        args = {argname: ChHandle(x=Ch(idx)) for idx, argname in enumerate(inspect.getargspec(lmb)[0])}
+        args = {argname: ChHandle(x=Ch(idx)) for idx, argname in enumerate(getargspec(lmb)[0])}
         if initial_args is not None:
             for initial_arg in initial_args:
                 if initial_arg in args:

chumpy/version.py

@@ -1,3 +1,3 @@
-version = '0.71'
+version = '0.72'
 short_version = version
 full_version = version