Oct 31, 2008 · 1) The difference between append and extend. append: Appends any Python object as-is to the end of the list (i.e. as a the last element in the list). The resulting list may be …

.extend will not create a new list nor copy references elements from that list. extend is equivalent to a[len(a):] = iterable. extend will operate over the list you are doing the operation and should …

Of course, you could simple note that a.extend(b) is nearly the same as b.update(a); a=b. To remove the assignment, you could do it thus: To remove the assignment, you could do it thus: …

jQuery.extend(a,b,c) with a, b, c is object or array. The flow overrite will be b->a, c ->a (b overrite a, c override a ...) this function will return a and a also change value too. Advanced Examples: …

0.520906925201 #append 0.602569103241 #extend-list 0.357008934021 #extend-tuple And the same ordering of the results my linux box (Ubuntu, x86-64 core i7): 0.307395935059 #append …

Apr 8, 2015 · list.extend uses an iterable and adds all of it's elements to the end of your list: Extend the list by appending all the items in the given list; equivalent to a[len(a):] = L. You …

Dec 18, 2013 · extend is usually a high level function that copies the prototype of a new subclass that you want to extend from the base class. So you can do something like: extend( Fighter, …

Similar differences apply to extend vs update. Using the same name for operations with such drastically different semantics would be very misleading indeed. it seems pythonic to just use a …

Nov 8, 2009 · Extend is used when a use case adds steps to another first-class use case. For example, imagine "Withdraw Cash" is a use case of an Automated Teller Machine (ATM). …

This is by far the best answer here. It does deep copy, does not mangle the first object, supports infinite objects, and can alter types while extending (i.e. many answers here will not extend a …