print('hello') print("hello") print('hello \'world\'') print("hello 'world'") print('hello "world"') print('hello ' + 'world') print('hello ' *3) print('hello'[0]) print('hello world'.capitalize()) print('hello world'.upper()) print('hello world'.__len__()) print(len('hello world')) print('hello world'.replace('world','programming')) print('\\') print('hello\nworld') print("hello\nworld") print('hello\tworld') print('hello\t\tworld') print("\a") print(10+5) print("10"+"5")