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Correct custom fetch callback examples #43

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Correct custom fetch callback examples #43

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10 changes: 5 additions & 5 deletions docs/usage.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -254,7 +254,7 @@ The function calls are converted to appropriate values and mapped to their librr
]

def my_callback(filename, cf, start, end, step):
itemcount = (end - start) / step
itemcount = math.ceil((end - start) / step)
return {
'start': start,
'step': 300,
Expand All @@ -265,8 +265,8 @@ The function calls are converted to appropriate values and mapped to their librr
}
}

rrdtool.register_fetch_cb(my_callable)
rrdtool.graphv(**graphv_args)
rrdtool.register_fetch_cb(my_callback)
rrdtool.graphv(*graphv_args)

# also works with callable objects
class MyCallable(object):
Expand All @@ -276,7 +276,7 @@ The function calls are converted to appropriate values and mapped to their librr

cb = MyCallable()
rrdtool.register_fetch_cb(cb) # overwrite callback
rrdtool.graphv(**graphv_args)
rrdtool.graphv(*graphv_args)

.. note:: This function uses Python long integers on Python 2.x and 3.x to minimize compatibility code requirements (Python 3 has long integers as its default int anyway).

Expand Down Expand Up @@ -381,4 +381,4 @@ python-rrdtool will raise exceptions in the event of errors.

Raised in the event of errors generated by rrdtool itself.

Both exception classes are directly derived from the ``Exception`` class.
Both exception classes are directly derived from the ``Exception`` class.