MNT: use non-clashing name for local variable

Make it different from any prior or current special attribute name.

Author: pavoljuhas

src/diffpy/srfit/fitbase/recipeorganizer.py

@@ -454,9 +454,9 @@ def registerCalculator(self, f, argnames = None):
         self._addObject(f, self._calculators)
         # Register arguments of the calculator
         if argnames is None:
-            func_code = f.__call__.__func__.__code__
-            argnames = list(func_code.co_varnames)
-            argnames = argnames[1:func_code.co_argcount]
+            fncode = f.__call__.__func__.__code__
+            argnames = list(fncode.co_varnames)
+            argnames = argnames[1:fncode.co_argcount]
 
         for pname in argnames:
             if pname not in self._eqfactory.builders:
@@ -513,37 +513,37 @@ def registerFunction(self, f, name = None, argnames = None):
 
             import inspect
 
-            func_code = None
+            fncode = None
 
             # This will let us offset the argument list to eliminate 'self'
             offset = 0
 
             # check regular functions
             if inspect.isfunction(f):
-                func_code = f.__code__
+                fncode = f.__code__
             # check class method
             elif inspect.ismethod(f):
-                    func_code = f.__func__.__code__
+                    fncode = f.__func__.__code__
                     offset = 1
             # check functor
             elif hasattr(f, "__call__") and hasattr(f.__call__, '__func__'):
-                    func_code = f.__call__.__func__.__code__
+                    fncode = f.__call__.__func__.__code__
                     offset = 1
             else:
                 m = "Cannot extract name or argnames"
                 raise ValueError(m)
 
             # Extract the name
             if name is None:
-                name = func_code.co_name
+                name = fncode.co_name
                 if name == '<lambda>':
                     m = "You must supply a name name for a lambda function"
                     raise ValueError(m)
 
             # Extract the arguments
             if argnames is None:
-                argnames = list(func_code.co_varnames)
-                argnames = argnames[offset:func_code.co_argcount]
+                argnames = list(fncode.co_varnames)
+                argnames = argnames[offset:fncode.co_argcount]
 
         #### End introspection code