Python编程从入门到实践（2）学习笔记
学习了第三章 关于数组 书上说叫 列表
1 # 第三章 数组 2 # 数组 打印的是全部 ['trek','cannondale','redline','specialized'] 3 bicycles = ['trek', 'cannondale', 'redline', 'specialized'] 4 print(bicycles) 5 6 print(bicycles[0]) 7 print(bicycles[0].title()) 8 print(bicycles[-1]) 9 10 # 数组增删改 11 motorcycles = ['honda', 'yamaha', 'suzuki'] 12 print(motorcycles) 13 motorcycles[0] = 'ducati' 14 print(motorcycles) 15 16 motorcycles.append('zzz') 17 print(motorcycles) 18 19 motorcycles = [] 20 motorcycles.append('honda') 21 motorcycles.append('yamaha') 22 motorcycles.append('suzuki') 23 print(motorcycles) 24 25 # 插入元素 26 motorcycles.insert(0, 'ducati') 27 print(motorcycles) 28 del motorcycles[0] 29 print(motorcycles) 30 31 # pop 32 motorcycles = ['honda', 'yamaha', 'suzuki'] 33 print(motorcycles) 34 # 最后一个 35 motorcycles.pop() 36 print(motorcycles) 37 # 第一个 38 motorcycles.pop(0) 39 print(motorcycles) 40 41 # 永久排序 42 cars = ['bmw', 'audi', 'toyota', 'subaru'] 43 cars.sort() 44 print(cars) 45 cars.sort(reverse=True) 46 print(cars) 47 48 # 临时排序 49 cars = ['bmw', 'audi', 'toyota', 'subaru'] 50 print(sorted(cars)) 51 print(sorted(cars,reverse=True)) 52 print(cars) 53 54 #反转 55 cars = ['bmw', 'audi', 'toyota', 'subaru'] 56 cars.reverse() 57 print(cars) 58 len(cars) 59 60 #越界 61 # print(cars[4]) 62 # zz = [] 63 # print(zz[-1]) 64 65
