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-rw-r--r--numpy/f2py/docs/usersguide/extcallback_session.dat19
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diff --git a/numpy/f2py/docs/usersguide/extcallback_session.dat b/numpy/f2py/docs/usersguide/extcallback_session.dat
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+++ b/numpy/f2py/docs/usersguide/extcallback_session.dat
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+>>> import pfromf
+>>> pfromf.f2()
+Traceback (most recent call last):
+ File "<stdin>", line 1, in ?
+pfromf.error: Callback fpy not defined (as an argument or module pfromf attribute).
+
+>>> def f(): print "python f"
+...
+>>> pfromf.fpy = f
+>>> pfromf.f2()
+ in f2, calling f2py..
+python f
+>>> pfromf.f1()
+ in f1, calling f2 twice..
+ in f2, calling f2py..
+python f
+ in f2, calling f2py..
+python f
+>>> \ No newline at end of file