T = ((1+2), ((1+2),), ('a'+'b'), (1, ), (1,2,3,4,5))
((1+2),)
(1, )
(1,2,3,4,5)
一共4个
((1+2),)
(1, )
(1,2,3,4,5)
一共4个
2021-04-10
score=(100, 69, 29, 100, 72, 99, 98, 100, 75, 100, 100, 42, 88, 100)
print(score.count(100))
print(score.count(100))
2021-04-10
long= [[1, 2, 3], [5, 3, 2], [7, 3, 2]]
for i in long:
s=i[0]*i[1]*i[2]
print(s)
for i in long:
s=i[0]*i[1]*i[2]
print(s)
2021-04-09
long= [[1, 2, 3], [5, 3, 2], [7, 3, 2]]
num=0
while num<3:
s=long[num][0]*long[num][1]*long[num][2]
num=num+1
print(s)
num=0
while num<3:
s=long[num][0]*long[num][1]*long[num][2]
num=num+1
print(s)
2021-04-09
name=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
temp=name.pop()
name.insert(0,temp)
temp=name.pop(2)
name.append(temp)
print(name)
temp=name.pop()
name.insert(0,temp)
temp=name.pop(2)
name.append(temp)
print(name)
2021-04-09
name= ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
name.pop(2)
name.pop(2)
print(name)
name.pop(2)
name.pop(2)
print(name)
2021-04-09
name=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
name.append('Phoebe')
name.append('Zero')
name.insert(5,'Gen')
print(name)
name.append('Phoebe')
name.append('Zero')
name.insert(5,'Gen')
print(name)
2021-04-09
score=[95.5, 85, 59, 66, 72]
number=1
while number<=3:
print(score[-number])
number=number+1
//print(score[-3,-1]) 不知道为什么错
number=1
while number<=3:
print(score[-number])
number=number+1
//print(score[-3,-1]) 不知道为什么错
2021-04-09
L = [75, 92, 59, 68, 99]
sum = 0
for cj in L:
sum += cj
print(sum / len(L))
sum = 0
for cj in L:
sum += cj
print(sum / len(L))
2021-04-08
age = 0 #python虽然不要先声明变量类型 但是必须要先有这个变量才能用于逻辑判断
if age < 18:
print('teenager')
else:
print('adult')
if age < 18:
print('teenager')
else:
print('adult')
2021-04-08
最赞回答 / ak_1
<...code...>开始循环的时候先运行sum = sum * num ，所以 sum = 1 * 1 =1然后运行 num = num +1 ，所以 num = 1 + 1 = 2然后这个while循环中的语句执行完了 ，这时num = 2，num &程中就= 10 依然成立所以接着又一遍运...
2021-04-08
已采纳回答 / 半勺暖阳
d = { 'Alice': 45, 'Bob': 60, 'Candy': 75, 'David': 86, 'Ellena': 49}d['Gaven'] = 86print(d)不要着急，后面有教哦
2021-04-07