Python equivalent of Archive::Tar?

[Tom Robinson]

Is there a python equivalent of this perl module?  I specifically want
to be able to create a tar file in memory by reading in the files for
it and then write it out to a web browser.  I've managed to acheive
this in perl by using Archive::Tar, has anyone written a similar
library for python?  I had a quick search but "tar" always turns up a
huge amount of unwanted results. :)

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