Every Python List Method — A Visual Reference

Adding Elements

lst = [1, 2, 3]
lst.append(4)      # [1,2,3,4]
lst.extend([5,6])  # [1,2,3,4,5,6]
lst.insert(0, 0)   # [0,1,2,3,4,5,6]

Removing

lst.pop()      # remove & return last
lst.pop(0)     # remove & return index 0
lst.remove(3)  # remove first matching value
lst.clear()    # empty the list

Searching

lst.index(5)    # position of 5 (ValueError if missing)
lst.count(2)    # how many 2s
2 in lst        # membership test

Ordering

lst.sort()              # in place
lst.sort(reverse=True)
lst.sort(key=lambda x: -x)
lst.reverse()
sorted(lst)             # returns new list

Copying

a = [1,2,3]
b = a              # same list!
c = a[:]           # shallow copy
d = list(a)        # shallow copy
import copy
e = copy.deepcopy(a)