Can I extend list in Python with prepend elements instead of append? Question: I can perform a = [1,2,3] b = [4,5,6] a.extend(b) # a is now [1,2,3,4,5,6] Is there way to perform an action for extending list and adding new items to the beginning of the list? Like this a = [1,2,3] b = …
How do I prepend to a short python list? Question: list.append() appends to the end of a list. This explains that list.prepend() does not exist due to performance concerns for large lists. For a short list, how do I prepend a value? Asked By: hurrymaplelad || Source Answers: The s.insert(0, x) form is the most …
Prepend a line to an existing file in Python Question: I need to add a single line to the first line of a text file and it looks like the only options available to me are more lines of code than I would expect from python. Something like this: f = open(‘filename’,’r’) temp = f.read() …
