Answers for "swap two items in a list python"

python swap two values in list

a_list = ["a", "b", "c"]
a_list[0], a_list[2] = a_list[2], a_list[0]
print(a_list) # ["c", "b", "a"]

swap list items in python

lst = ["a","b","c","d","e","f","g","h","i","j"]
n = len(lst)
for i in range(0,n-1,2):
    lst[i],lst[i+1] = lst[i+1],lst[i]
print(lst)
print(n)

python swap function

def swap0(s1, s2):
    assert type(s1) == list and type(s2) == list
    tmp = s1[:]
    s1[:] = s2
    s2[:] = tmp
    
# However, the easier and better way to do a swap in Python is simply:
s1, s2 = s2, s1