L = ['Alice', 66, 'Bob', True, 'False', 100]
# print(L[5:6])
n=1
while n<6:
x=L[n:n+1]
print(x)
n+=2
# print(L[5:6])
n=1
while n<6:
x=L[n:n+1]
print(x)
n+=2
2021-03-04
def square_of_sum(L):
sum = 0
for a in L:
sum = sum + a*a
return sum
sum = 0
for a in L:
sum = sum + a*a
return sum
2021-03-04
L = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
S = set([1, 3, 5, 7, 9, 11])
for a in L:
if a in S:
S.remove(a)
else:
S.add(a)
print(S)
S = set([1, 3, 5, 7, 9, 11])
for a in L:
if a in S:
S.remove(a)
else:
S.add(a)
print(S)
2021-03-04
d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
print(len(d))
print(len(d))
2021-03-04
d = {
'Alice': [45],
'Bob': [60],
'Candy': [75],
}
l=(
[50,61,66],[80,61,66],[88,75,90]
)
num=-1
for i in d:
num=+1
d[i].append(l[num])
print(d)
'Alice': [45],
'Bob': [60],
'Candy': [75],
}
l=(
[50,61,66],[80,61,66],[88,75,90]
)
num=-1
for i in d:
num=+1
d[i].append(l[num])
print(d)
2021-03-03
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
l=['Alice',
'Bob',
'Candy',
'David',
'Mimi']
for i in l:
print(d.get(i))
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
l=['Alice',
'Bob',
'Candy',
'David',
'Mimi']
for i in l:
print(d.get(i))
2021-03-03
最赞回答 / Esther4914692
num<1000的代码流程：当运行到num=999，循环继续num=1000，然后sum累加1000，循环结束，输出250500num<=1000的代码流程：运行num=999，num=1000，sum累加1000，跳到循环判断，循环继续，num=1001，判断为奇数，调到循环判断，不满足判断循环结束，注意前面sum也是累加到1000，所以输出还是250500
2021-03-03
def square_of_sum(list_square):
list_squ = 0
for each in list_square:
list_squ += each*each
print(list_squ)
square_of_sum([1,2,3])
list_squ = 0
for each in list_square:
list_squ += each*each
print(list_squ)
square_of_sum([1,2,3])
2021-03-02
没看懂题目的意思，
ride = 0
for each in range(101):
ride = each*each+ride
print(ride)
ride = 0
for each in range(101):
ride = each*each+ride
print(ride)
L = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
L.pop(2)
L.pop(-2)
print(L)
L.pop(2)
L.pop(-2)
print(L)
2021-03-02
test = [95.5, 85, 59, 66, 72]
test.sort()
print(test[-1])
print(test[-2])
print(test[-3])
test.sort()
print(test[-1])
print(test[-2])
print(test[-3])
2021-03-02