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KelSolaar/unpackDefaults.py

Created September 23, 2011 15:00
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Unpack Defaults
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unpackDefaults.py
import re
import itertools
def unpackDefault(datas, length=3, default=None):
datas.extend([default for i in range(length-len(datas))])
return datas
def unpackDefault2(datas, length=3, default=None):
return itertools.islice(itertools.chain(iter(datas), itertools.repeat(default)), length)
sequences = "10-25 26 45 1010-1025,64"
for pattern in sequences.split():
start, end, step = unpackDefault(re.split("-|,", pattern))
print start, end, step
for pattern in sequences.split():
start, end, step = unpackDefault2(re.split("-|,", pattern))
print start, end, step
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