L = [1,2,3,4,5]

s1 = ','.join(str(n) for n in L)

print(s1)

dict = {'a': 1, 'b': 2, 'b': '3'};

temp = dict['b']

print(temp)

下面代码的输出结果是（）。

i = ['a','b','c']

l = [1,2,3]

b = dict(zip(i,l))

print(b)

A

fruits={'apple': 3,'banana': 4,'pear':5}

fruits [' banana']=7

print(sum(fruits. values()))

list1 = [(m,n) for m in 'AB' for n in 'CD']

print(list1)

a = [1,3]

b = [2,4]

a.extend(b)

print(a)