enumerate function

- 
l1 = ["potato", "tomato", "egg roll", "chatpati", "rice"]
i = 0
for item in l1:
    if i % 2 == 0:
        print(f"pls bring this items only {item}")
    i += 1

# this is short method of upper code using enumerate function
for index, item in enumerate(l1):
    if index % 2 == 0:
        print(f"pls bring this item only {item}")

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