initial development of NumericDispatcher

[SVN r8022]

test_num.py

@@ -0,0 +1,36 @@
+r'''
+    >>> i1 = Int(1)
+    >>> i2 = Int(2)
+    >>> i = i1 + i2
+    >>> i.i()
+    3
+    >>> i = i1 - i2
+    >>> i.i()
+    -1
+    >>> i = i1 + 5
+    >>> i.i()
+    6
+    >>> i = 3 + i2
+    >>> i.i()
+    5
+    >>> i = i1 - 3
+    Traceback (innermost last):
+    TypeError: incompatible arguments for -
+    >>> i = 3 - i1
+    Traceback (innermost last):
+    TypeError: incompatible arguments for -
+'''
+
+from num import *
+import string
+import re
+import sys
+
+def run(args = None):
+    if args is not None:
+        sys.argv = args
+    import doctest, test_num
+    doctest.testmod(test_num)
+    
+if __name__ == '__main__':
+    run()