Okay, now, it is understood. Thanks. Ken
Andre Engels wrote:
On Thu, Mar 11, 2010 at 4:32 PM, Ken G. <beach...@insightbb.com> wrote:If the following program change list[2] to 2010, replacing 1997 (and it does), why doesn't the second program work in changing line[ 9:11] to 20 from 08? FIRST PROGRAM: list = ['physics', 'chemistry', 1997, 2000] print list[2] list[2] = 2010 print list[2] OUTPUT: 1997 2010 SECOND PROGRAM: line = [2010020820841134] if line[ 9:11] == "08": line[ 9:11] = 20 print line[ 9:11] OUTPUT: "TypeError: 'str' object does not support item assignment." Thanking you all in advance,First, you seem to have made a mistake in copying your programs: In the second program to get your error message, line = [2010020820841134] should read line = "2010020820841134" As for your question: The error message already says it better than I do: If x is a string, then x[9] = <something> is not allowed, nor is x[9:11] = <something>.
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