list1 = ['google','Python3',1000,3000]
list2 = [1,2,3,4,5]
list3 = ['a','b','c','d'];
print(list1)
print(list2)
print(list3)
print(list3[1])
list3[1] = 'GQ'
print(list3[1])
del list3[1]
print(list3[1])
print(list1[2])
print('list3[1:3]:',list3[1:3])
print(list2 + list3)
print(list2 * 4)
print(list1.__len__())
print(3 in list2)
for x in list3:
print(x, end=' ')
list4 = ['Google','Baidu','Apple','Python3']
print(list4[2])
print(list4[-2])
print(list4[1: ])
list5 = [1,2,3,4,5,6]
list5 += [26,27,28,29]
print(list5)
a = ['a','b','c']
b = [0,1,2,3,4]
c = [a, b]
print(c)
print(c[0])
print('嵌套拼接:',c[0][0])
print(dir(a))