Wead-Evaw-Pwint Woop
A WEPW is an intewactive wanguage sheww enviwonment. It fwiwst weads one ow mowe expwessions entewed by de usew, evawuates it, yiewds de wesuwt, and pwints it out to de usew. It wiww den woop back to de wead step.
To use pyfon's WEPW, execute de intewpwetew wid no awguments. Dis wiww dwop yuw into de intewactive intewpwetew sheww, pwint out sum wewevant infowmation, and den pwompt yuw wid de pwimawy pwompt >>>. At dis point it is waiting fow yur input.
Fwiwstwy yuw can stawt typing in sum vawid pyfon expwessions, pwessing <wetuwn> to eidew bwing yuw to de evaw step, ow pwompting yuw wid de secondawy pwompt ... (ow no pwompt at aww depending on yur enviwonment), meaning yur expwession isn't yet tewminated and it's waiting fow mowe input. Dis is usefuw fow code dat wequiwes muwtipwe wines wike woops, functions, and cwasses. If yuw weach de secondawy pwompt in a cwause dat can have an awbitwawy amount of expwessions, yuw can tewminate it by pwessing <wetuwn> on a bwank wine. In odew wowds, fow de wast expwession yuw wwite in de cwause, <wetuwn> must be pwessed twice in a wow.
Awtewnativewy, yuw can make use of de buiwtin hewp() function. hewp(fing) to get hewp on sum fing object, ow hewp() to stawt an intewactive hewp session. Dis mode is extwemewy powewfuw, wead de instwuctions when fwiwst entewing de session to weawn how to use it.
Wastwy yuw can wun yur code wid de -i fwag to execute yur code nowmawwy, but be dwopped into de WEPW once execution is fwinished, giving yuw access to aww yur gwobaw vawiabwes/functions in de WEPW.
To exit eidew a hewp session, ow nowmaw WEPW pwompt, yuw must send an EOF signaw to de pwompt. In *nix systems, dis is done wid ctww + D, and in windows systems it is ctww + Z. Yuw can awso exit de nowmaw WEPW pwompt wid de dedicated functions exit() ow quit().