Bug report
LWPCookieJar.save() doesn't truncate the file.
So removing cookies from an existing jar file then saving it gives unexpected results :
fromhttp.cookiejarimportLWPCookieJarfromurllib.requestimportRequest, urlopenlwp=LWPCookieJar("cookies.lwp") # get some cookies & saverequest=Request("https://www.scoopmeacookie.com/give-me-more/") withurlopen(request) asresponse: lwp.extract_cookies(response, request) # here's some cookiesprint(f"Extracted : {lwp}") lwp.save() # clear the jar & savelwp.clear() # the jar is now emptyprint(f"Clear : {lwp}") lwp.save() # are those cookies really gone ?lwp.load() # they're back ! that would be great IRL# LWPCookieJar.save() didn't truncate the file (os.O_TRUNC is missing)print(f"Reload : {lwp}")Environment
Python 3.11.0 (main, Oct 24 2022, 18:26:48) [MSC v.1933 64 bit (AMD64)]
Windows 10 64 bits 22H2
Linked PRs
gh-99576: Fix cookiejar file that was not truncated for some classes #99616
[3.11] gh-99576: Fix cookiejar file that was not truncated for some classes (GH-99616) #100377