DRY version of a list

What would be the most efficient way to do the following:

genres = [value_from_key(wb, 'Genre (1)', n),
          value_from_key(wb, 'Genre (2)', n),
          value_from_key(wb, 'Genre (3)', n),
          value_from_key(wb, 'Genre (4)', n),]

I tried doing it with a list comprehension -- genres = [value_from_k开发者_StackOverflowey(wb, 'Genre (%s)'%(i), n) for i in range[1,4]], but it kept raising a TypeError saying object is unsubscriptable. What would be the DRY way of doing the above? Thank you.

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Replace the square brackets [1,4] with round braces (1,4) in your call to range:

genres = [value_from_key(wb, 'Genre (%s)'%(i), n) for i in range(1,4)]

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but it kept raising a TypeError saying object is unsubscriptable.

Because range[1,4] means "use the tuple (1, 4) as a subscript for range". Since range is a function, you want to call it, i.e. put the arguments in parentheses (just as you do for value_from_key). I don't really see how you would conclude from an error like this that there's something wrong with the list comprehension itself. o_O

What would be the DRY way of doing the above?

With the list comprehension.