Feature Requests item #1757395, was opened at 2007-07-20 10:12
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Category: Python Library
Group: Python 2.6
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: Alexander Dutton (asdutton)
Assigned to: Nobody/Anonymous (nobody)
Summary: splice() function for itertools
Initial Comment:
Could we have a splice function in itertools? I see there was once a roundrobin
proposal (#756253), but it was three years ago ...
Here's an alternate implementation:
def splice(*args):
"""splice(*iterables) --> iterator
Returns an iterator whose next() method returns an element from each of the
iterables in turn before starting again with the first iterable."""
iters = list(args)
n = len(iters)
i = 0
while n>0:
i %= n
try:
yield iters[i].next()
i += 1
except StopIteration, e:
n -= 1
iters[i:i+1] = []
raise StopIteration
----------------------------------------------------------------------
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