also, in Chapter6, we create an empty DataBlock
like below.
dblock = DataBlock()
and pass a pandas DataFrame
to the datasets
method.
dsets = dblock.datasets(df)
then, looks like dsets
already knows how to read the df
because it prints out information included in the DataFrame
.
However, according to the internal source code from the datasets
method (below), when get_items
is not set, it does nothing (noop
). And this is the case I guess.
def datasets(self, source, verbose=False):
self.source = source
items = (self.get_items or noop)(source)
......
How does DataBlock
knows the way to read DataFrame
?