escaping only double quotes

[cesco]

Hi,

I have a string which is constructed like this:

string = "Butler's 15\" TV"
s = """my string goes here "%s" """ % string

the single string, unfortunately, gets escaped which is something I
want to avoid because I have to load the data into a database using
the json format and I get an "invalid escape error" if the single
quote is escaped.

Is there a way to accomplish this?

Thanks and regards
Francesco