We cannot inspect the buildin functions, but we can wrap them.

Author: Leandro Inocencio

example_nodes/math_node.py

@@ -1,19 +1,8 @@
 #!/usr/bin/python
 # -*- coding: utf-8 -*-
-import math
+import example_nodes.wrappers.math as math
 import inspect
 from functools import partial
-
-# add basic math functions to math library
-math.add = lambda x, y: x + y
-math.sub = lambda x, y: x - y
-math.mul = lambda x, y: x * y
-math.div = lambda x, y: x / y
-
-# Transform float to functions
-for constant in ['pi', 'e', 'tau', 'inf', 'nan']:
-    setattr(math, constant, partial(lambda x: x, getattr(math, constant)))
-
 from NodeGraphQt import BaseNode
 
 

example_nodes/wrappers/__init__.py

@@ -0,0 +1,53 @@
+from math import *
+
+_pi = pi
+_e = e
+_tau = tau
+_inf = inf
+_nan = nan
+
+# add contants as functions
+
+
+def pi():
+    print('pi', _pi)
+    return _pi
+
+
+def e():
+    print('e', _e)
+    return _e
+
+
+def tau():
+    print('tau', _tau)
+    return _tau
+
+
+def inf():
+    print('inf', _inf)
+    return _inf
+
+
+def nan():
+    print('nan', _nan)
+    return _nan
+
+
+# add basic math functions to math library
+
+
+def add(x, y):
+    return x + y
+
+
+def sub(x, y):
+    return x - y
+
+
+def mul(x, y):
+    return x * y
+
+
+def div(x, y):
+    return x / y