[Tutor] Changing a string number to another number [RESOLVED]

[Ken G.]

On 04/15/2015 09:09 AM, Steven D'Aprano wrote:
> On Wed, Apr 15, 2015 at 08:21:33AM -0400, Ken G. wrote:
>> When running the following code, I get the following
>> error code:
>>
>> 201504110102030405061
>> Traceback (most recent call last):
>>    File "Mega_Millions_Tickets_Change.py", line 11, in <module>
>>      datecode[20:21] = "0"
>> TypeError: 'str' object does not support item assignment
> Try this:
>
> datacode = datacode[:20] + "0" + datacode[21:]
>
>
> This is called "slicing". We take a slice of the string, from the start up to just before position 20; "0"; and a slice from position 21 to the end of the string. The three pieces are then concatenated together, giving a new string.
Wow! So darn simple with a good explanation. Thanks!

Ken