Python library

Python3.6标准库Itcontainsdatatypesthatwouldnormallybeconsideredpartofthe“core”ofalanguage,suchasnumbers andlists.Forthesetypes,thePythonlanguagecoredefinestheformofliteralsandplacessomeconstraints ontheirsemantics,butdoesnotfullydefinethesemantics. Thelibra