I’m trying to use values in list to select part of word. Here is working solution:
word = 'abc'*4 slice = [2,5] #it can contain 1-3 elements def try_catch(list, index): try: return list[index] except IndexError: return None print(word[slice[0]:try_catch(slice,1):try_catch(slice,2)])
but I wonder if is it possible to shorten it? Something like this comes to my mind:
word = 'abc'*4 slice = [2,6,2] print(word[':'.join([str(x) for x in slice])]) #missing : for one element in list
It produces:
TypeError: string indices must be integers
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Answer
You can use the built-in slice
(and need to name your list differently to be able to access the built-in):
>>> word = 'abcdefghijk' >>> theslice = [2, 10, 3] >>> word[slice(*theslice)] 'cfi'