List

List Definition One of the data structure in python. Almost same as array in other languages. Object. Data Structures in Python List Tuple Dictionary set declaration temp=[] temp=list() temp=[5,9,44] index structure characteristic List in List is possible. This is same as 2D array in other languages String in python is same as List slicing [starting index : ending index-1 : condition index] [0:8:3] = select index 0 to 7 by adding 3 [:8:] = select index 0 to 7 by adding 1 [7::] = select index 7 to -1 by adding 1 [::-1] = select index 0 to -1 by adding -1 a = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9] print(a[0:8:3]) # [0, 3, 6] print(a[:8:]) # [0, 1, 2, 3, 4, 5, 6, 7] print(a[7::]) # [7, 8, 9] print(a[::-1]) # [9, 8, 7, 6, 5, 4, 3, 2, 1, 0] Arithmetic Operation a=[1,2,3] b=["apple","house","computer"] print(a+b) # [1, 2, 3, 'apple', 'house', 'computer'] # print(a+3) # error # print(a-b) # error # print(a-3) # error # print(a*b) # error print(b*3) # ['apple', 'house', 'computer', 'apple', 'house', 'computer', 'apple', 'house', 'computer'] print(b*0) # [] # print(a/b) # error # print(a/3) # error add element append() = add a new element behind extend() = add new elements behind insert() = add new elements by index [] = add new elements by index condition a=[1,2,3,4,5,6,7,8,9] b=["apple","house","computer"] a.