d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
print("请输入你想要删除的名字")
name=input()
grade=d.get(name)
if grade!=None:
d.pop(name)
print("删除成功，剩余为\n")
print(d)
else:
print("删除失败，此人不存在")
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
print("请输入你想要删除的名字")
name=input()
grade=d.get(name)
if grade!=None:
d.pop(name)
print("删除成功，剩余为\n")
print(d)
else:
print("删除失败，此人不存在")
2021-10-04
names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
for i in names:
lowername = i.lower()
names.append(lowername)
if len(names) == 10:
break
print(names)
name_set = set(names)
k = input()
if k in name_set:
print("True")
else:
print("False")
for i in names:
lowername = i.lower()
names.append(lowername)
if len(names) == 10:
break
print(names)
name_set = set(names)
k = input()
if k in name_set:
print("True")
else:
print("False")
2021-10-03
已采纳回答 / BioCrossCoder
主要是教你format这个函数定义变量的时候，如果赋值为字符串，其中一部分可以预留为空，用大括号表示。比如定义变量a='ABC{}'那么这个时候变量a的类型是一个字符串，但它的值是可变的，因为ABC是确定的字符，但{}不是。然后你想给大括号{}里面添加字符的话，可以用a.format()函数，a是你定义好值里带{}的变量，format后面的小括号()里面可以填你想加到大括号{}里面的内容，比如想加DEF，那么a.format('DEF')的值就是ABCDEFa.format('DEF')也是一个变量，这时...
2021-10-02
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
OldScore = d.get('Alice')
if(OldScore != None):
print(OldScore)
d['Alice'] = 60
print(d)
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
OldScore = d.get('Alice')
if(OldScore != None):
print(OldScore)
d['Alice'] = 60
print(d)
2021-09-30
L=['Alice', 'Bob', 'Candy', 'David', 'Ellena']
S=[89, 72, 88, 79, 99]
n=len(S)
for i in range(n):
for j in range(i+1,n):
if S[i]<S[j]:
t=S[j]
S[j]=S[i]
S[i]=t
name = L[j]
L[j] = L[i]
L[i] = name
print(S)
print(L)
S=[89, 72, 88, 79, 99]
n=len(S)
for i in range(n):
for j in range(i+1,n):
if S[i]<S[j]:
t=S[j]
S[j]=S[i]
S[i]=t
name = L[j]
L[j] = L[i]
L[i] = name
print(S)
print(L)
2021-09-28
# Enter a code
names=['Alice','Bob','Candy','David','Ellena']
score=[89,72,88,79,99]
names.sort()
names.reverse()
score.sort()
score.reverse()
A=[names,score]
print(A)
names=['Alice','Bob','Candy','David','Ellena']
score=[89,72,88,79,99]
names.sort()
names.reverse()
score.sort()
score.reverse()
A=[names,score]
print(A)
2021-09-28
names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
name_set = set(names)
new_names = []
i = input("输入一个名字：")
new_i = i.title()
if new_i in names:
print('Ture')
name_set = set(names)
new_names = []
i = input("输入一个名字：")
new_i = i.title()
if new_i in names:
print('Ture')
2021-09-27
最新回答 / qq_慕九州0566793
你用b循环a，a是list，里面的值是int,每次循环只有一个int值L = [[1, 2, 3], [5, 3, 2], [7, 3, 2]]for a in L: x=a[0] y=a[1] z=a[2] c=x*y*2+x*z*2+y*z*2 print c
2021-09-25