swap_firstandlast_element.py

# Python program to interchange first and last elements in a list
# for loop
"""
l1 = [12, 24, 21, 45, 71, 74]
for i in l1:
    l1[0],l1[-1] = l1[-1],l1[0]
    print(l1)
    break
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# while loop
l1 = [12, 24, 21, 45, 71, 74]
while True:
    l1[0], l1[-1] = l1[-1], l1[0]
    print(l1)
    break
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"""