Python Cookbook 3rd 原版PDF by Beazley & Jones

Since2008,thePythonworldhasbeenwatchingtheslowevolutionofPython3.ItwasalwaysknownthattheadoptionofPython3wouldlikelytakealongtime.Infact,evenatthetimeofthiswriting(2013),mostworkingPythonprogrammerscontinuetousePython2inproduction.AlothasbeenmadeaboutthefactthatPython3is