TableofContents Prefacexi Chapter1:CurrentStatusofPython1 Wherearewenowandwherewearegoing?2 WhyandhowdoesPythonchange?2 Gettinguptodatewithchanges–PEPdocuments3 Python3adoptionatthetimeofwritingthisbook4 ThemaindifferencesbetweenPython3andPython25 WhyshouldIcare?5 Themainsyntaxdifferencesandcommonpitfalls5 Syntaxchanges6 Changesinthestandardlibrary7 Changesindatatypesandcollections8 Thepopulartoolsandtechniquesusedformaintainingcross-version compatibility8 NotonlyCPython12 WhyshouldIcare?13 StacklessPython13 Jython14 IronPython1 4 PyPy15 ModernapproachestoPythondevelopment16 Application-levelisolationofPythonenvironments17 Whyisolation?19 Popularsolutions21 virtualenv21 venv23 buildout24 Whichonetochoose 共499页