Message 386608 - Python tracker

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Author	steven.daprano
Recipients	samrajput1143, steven.daprano
Date	2021-02-07.20:50:04
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1612731005.01.0.094347832032.issue43157@roundup.psfhosted.org>
In-reply-to

Content
There is also an FAQ about this: https://docs.python.org/3/faq/programming.html#how-do-i-create-a-multidimensional-list See also: https://docs.python.org/3/faq/programming.html#why-did-changing-list-y-also-change-list-x By the way, for future bug reports, please take the time to make a minimal example please: http://www.sscce.org/ https://stackoverflow.com/help/minimal-reproducible-example In this case a minimal example would be: mylist = [[0]]*2 mylist[0][0] = 1 print(mylist) # expect [[1], [0]] but get [[1], [1]] Thank you.

There is also an FAQ about this:

https://docs.python.org/3/faq/programming.html#how-do-i-create-a-multidimensional-list

See also:

https://docs.python.org/3/faq/programming.html#why-did-changing-list-y-also-change-list-x

By the way, for future bug reports, please take the time to make a *minimal* example please:

http://www.sscce.org/

https://stackoverflow.com/help/minimal-reproducible-example

In this case a minimal example would be:

    mylist = [[0]]*2
    mylist[0][0] = 1
    print(mylist)  # expect [[1], [0]] but get [[1], [1]]

Thank you.

History
Date	User	Action	Args
2021-02-07 20:50:05	steven.daprano	set	recipients: + steven.daprano, samrajput1143
2021-02-07 20:50:05	steven.daprano	set	messageid: <1612731005.01.0.094347832032.issue43157@roundup.psfhosted.org>
2021-02-07 20:50:05	steven.daprano	link	issue43157 messages
2021-02-07 20:50:04	steven.daprano	create