[Python-Dev] itertools.chain should take an iterable ?
jack at performancedrivers.com
Thu Sep 1 19:35:19 CEST 2005
On Thu, Sep 01, 2005 at 07:58:40PM +0200, Paolino wrote:
> Working on a tree library I've found myself writing
> itertools.chain(*[child.method() for child in self]).
> Well this happened after I tried instinctively
> itertools.chain(child.method() for child in self).
> Is there a reason for this signature ?
This is more suited to comp.lang.python
Consider the below examples (and remember that strings are iterable)
>>> import itertools as it
>>> list(it.chain('ABC', 'XYZ'))
['A', 'B', 'C', 'X', 'Y', 'Z']
>>> list(it.chain(['ABC', 'XYZ']))
>>> list(it.chain(['ABC'], ['XYZ']))
Hope that helps,
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