Чтобы цикл преобразовать список в строчный
s = ["hEllO","iNteRneT","pEopLe"]
for i in range(len(s)):
s[i] = s[i].lower()
print(s)
Rajitha Amarasinghe
s = ["hEllO","iNteRneT","pEopLe"]
for i in range(len(s)):
s[i] = s[i].lower()
print(s)