On Mon, 27 Aug 2007, Kent Johnson wrote:
> For the built-in types, since Python 2.2 the familiar name (int, str,
> float, list, dict, set) *is* the type and you can compare to that
> directly, e.g.:
>
> In [13]: type(3)==int
> Out[13]: True
> In [14]: type([]) == list
> Out[14]: True
That is so cool. I never knew that.
Last night, I coded a routine that could accept either 1) a string, or 2)
a list or tuple of such strings or 3) a list or tuple of lists or tuples
of such strings.
I ended up writing a short isListOrTuple function that went something
like this:
def isListOrTuple(thing):
result = False
if isinstance(thing, list): result = True
if isinstance(thing, tuple): result = True
return result
Then I used
if isListOrTuple(param):
stuff
else:
other stuff
How much cleanar it would have been to just write:
if type(param) in [list, tuple]:
stuff
else:
other stuff
Thanks, Kent.
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