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+--- Thread: str.startswith(tuple) ... which start? (/thread-27095.html)
str.startswith(tuple) ... which start? - Skaperen - May-26-2020
str.startswith() supports a tuple (i guess that means not to use a list) to return True if str starts with any str in the tuple. is there an easy way to determine which str it started with, or would i be better off looping through the tuple in my own code and calling str.startswith() for each item and breaking when it gets True?
RE: str.startswith(tuple) ... which start? - Gribouillis - May-26-2020
I would perhaps use bisect for this, if the tuple is sorted
>>> import bisect
>>> t = ('bar', 'baz', 'foo')
>>> w = 'bazaaa'
>>> w.startswith(t)
True
>>> index = bisect.bisect_right(t, w) - 1
>>> t[index]
'baz'
RE: str.startswith(tuple) ... which start? - Skaperen - May-26-2020
i can sort the tuple when i create it. thanks!