between 'rangeand 'xrange'yesalbeit it might not be noticeable at first in terms of functionality and the tasks they performboth commands are nearly identical the key differencehoweveris that range (when usedbrings back list objectwhile xrange returns an xrange object what is the dogpile effectthis is one of the python interview questions that might be tricky to memorize at firstso do give it few good tries dogpile effect happens when website' cache expiresyet it is hit by many different requests from the user this can cause many different problemsfrom lag spikes to complete crashes system called semaphore lock is used to prevent dogpiles from happening explain what is called 'encapsulationencapsulation is one of the features that python has because it' an object-oriented programming language encapsulation is process of grouping related data members into onesingle place along with the member themselvesencapsulation also returns their functionstoo www bitdegree org