L = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
S = set([1, 3, 5, 7, 9, 11])
for item in L:
if item in S:
S.remove(item)
else :
S.add(item)
print(S)
S = set([1, 3, 5, 7, 9, 11])
for item in L:
if item in S:
S.remove(item)
else :
S.add(item)
print(S)
2021-03-26
# Enter a code
s = set(['Alice', 'Bob', 'Candy', 'David', 'Ellena'])
print(s)
s = set(['Alice', 'Bob', 'Candy', 'David', 'Ellena'])
print(s)
2021-03-26
num = 0
d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
for key in d.values():
num += 1
print(num)
d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
for key in d.values():
num += 1
print(num)
2021-03-26
# coding=utf-8
def my_sum(n):
sum=0
for v in range(1, n+1):
sum=sum+v
return sum
print(my_sum(100))
def digui(a):
if a==1:
return 1
return a+digui(a-1)
print(digui(100))
def my_sum(n):
sum=0
for v in range(1, n+1):
sum=sum+v
return sum
print(my_sum(100))
def digui(a):
if a==1:
return 1
return a+digui(a-1)
print(digui(100))
2021-03-26
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
print(d)
if 'Alice' in d.keys(): #用 if 'Alice' in d: 也一样
d.pop('Alice')
print(d)
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
print(d)
if 'Alice' in d.keys(): #用 if 'Alice' in d: 也一样
d.pop('Alice')
print(d)
2021-03-26
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
if 'Alice' in d:
template = d['Alice']
d['Alice'] = [template,60]
print(d)
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
if 'Alice' in d:
template = d['Alice']
d['Alice'] = [template,60]
print(d)
2021-03-26
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
L = ['Alice', 'Bob', 'Candy', 'Mimi', 'David']
for i in L:
print(d.get(i))
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
L = ['Alice', 'Bob', 'Candy', 'Mimi', 'David']
for i in L:
print(d.get(i))
2021-03-26
def sub_sum(L):
global sum1,sum2
n=1
sum1=0
sum2=0
for v in L:
if n%2==0:
sum1=sum1+v
else:
sum2=sum2+v
n+=1
return sum1,sum2
l=[1,2,3,4,5,6,7,8]
print(sub_sum(l))
print('奇数的和='+str(sum2))
print('偶数的和='+str(sum1))
global sum1,sum2
n=1
sum1=0
sum2=0
for v in L:
if n%2==0:
sum1=sum1+v
else:
sum2=sum2+v
n+=1
return sum1,sum2
l=[1,2,3,4,5,6,7,8]
print(sub_sum(l))
print('奇数的和='+str(sum2))
print('偶数的和='+str(sum1))
2021-03-26
T = (1, 'CH', [3, 4])
T = list(T)
T[2] = tuple(T[2])
T = tuple(T)
print(T)
T = list(T)
T[2] = tuple(T[2])
T = tuple(T)
print(T)
2021-03-26
L = []
num = 1
for v in range(1, 101):
L.append(v * v)
print(sum(L))
num = 1
for v in range(1, 101):
L.append(v * v)
print(sum(L))
已采纳回答 / longryzhou
scores[0]的值是45，scores[1]的值是60，scores[2]的值是75，scores[3]的值是86，scores[4]的值是49，index初始是0，第一次运行后是1，第二次是2，第三次是3，所以scores[Index]里面的Index是0就是scores[0]，Index是1就是scores[1]。。。
2021-03-25
# Enter a code
num = 2
sum = 0
while True:
num += 1
if num > 1000:
break
if num % 2 != 0:
continue
else:
sum += num
print(sum)
num = 2
sum = 0
while True:
num += 1
if num > 1000:
break
if num % 2 != 0:
continue
else:
sum += num
print(sum)
2021-03-25
num = 2
sum = 0
while True:
if num > 1000:
break
if num % 2 == 0:
sum = sum + num
num = num + 1
print(sum)
sum = 0
while True:
if num > 1000:
break
if num % 2 == 0:
sum = sum + num
num = num + 1
print(sum)
2021-03-25
age =16
if age >17:
print('adult')
else:
print('teenager')
if age >17:
print('adult')
else:
print('teenager')
2021-03-25