Copying data between file-like objects

[Thomas Lotze]

Hi,

another question: What's the most efficient way of copying data between
two file-like objects?

f1.write(f2.read()) doesn't seem to me as efficient as it might be, as a
string containing all the contents of f2 will be created and thrown away.
In the case of two StringIO objects, this means there's a point when the
contents is held in memory three times.

Reading and writing a series of short blocks to avoid a large copy buffer
seems ugly to me, and string objects will be created and thrown away all
the time. Do I have to live with that?

(In C, I would do the same thing, only without having to create and throw
away anything while overwriting a copy buffer, and being used to doing
everything the pedestrian way, anyway.)

-- 
Thomas