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>>> 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
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