1 files changed, 23 insertions, 0 deletions
diff --git a/numpy/f2py/docs/usersguide/callback_session.dat b/numpy/f2py/docs/usersguide/callback_session.dat
new file mode 100644
index 000000000..cd2f26084
--- /dev/null
+++ b/numpy/f2py/docs/usersguide/callback_session.dat
@@ -0,0 +1,23 @@
+>>> import callback
+>>> print callback.foo.__doc__
+foo - Function signature:
+  r = foo(fun,[fun_extra_args])
+Required arguments:
+  fun : call-back function
+Optional arguments:
+  fun_extra_args := () input tuple
+Return objects:
+  r : float
+Call-back functions:
+  def fun(i): return r
+  Required arguments:
+    i : input int
+  Return objects:
+    r : float
+
+>>> def f(i): return i*i
+... 
+>>> print callback.foo(f)     
+110.0
+>>> print callback.foo(lambda i:1)
+11.0