# Enter a code
L = [95.5, 85, 59, 66, 72]
L.sort(reverse = True)
print('first: ',L[0])
print('second: ',L[1])
print('third: ',L[2])
L = [95.5, 85, 59, 66, 72]
L.sort(reverse = True)
print('first: ',L[0])
print('second: ',L[1])
print('third: ',L[2])
2021-04-02
# Enter a code
courses = ['Chinese', 'Match', 'English']
scores = [92, 75, 99]
oder = [0, 1, 2]
print ('Alice\' score: ')
for i in oder:
print (courses[i],': ',scores[i])
courses = ['Chinese', 'Match', 'English']
scores = [92, 75, 99]
oder = [0, 1, 2]
print ('Alice\' score: ')
for i in oder:
print (courses[i],': ',scores[i])
2021-04-02
最赞回答 / 阿呦喂
python中的缩进起到了区别不同功能模块的作用，就像c中的{}和；一样，for循环中的缩进就说明了这条语句是受for控制的，相关运算需要满足for循环的条件，如果没有缩进，就不受for控制，这里sum=...
2021-04-01
已采纳回答 / 小白兔cai
print(round(average(1,2,2,3,4),2))你可以把打印结果改成这样，就会出现2.4，有可能你使用的编辑器版本问题，默认打印结果为整型，不保留小数点。
2021-04-01
# Enter a code
def list_a(a):
result = 0
for i in a:
result += i*i
return result
L = [10,20]
print list_a(L)
def list_a(a):
result = 0
for i in a:
result += i*i
return result
L = [10,20]
print list_a(L)
2021-03-31
# Enter a code
L = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
S = set([1, 3, 5, 7, 9, 11])
for i in L:
if i in S:
S.remove(i)
else:
S.add(i)
print S
L = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10]
S = set([1, 3, 5, 7, 9, 11])
for i in L:
if i in S:
S.remove(i)
else:
S.add(i)
print S
2021-03-31
# Enter a code
names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
name_set = set(names)
a = 'Alice'
for i in name_set:
if a.lower() in i.lower():
print "True"
names = ['Alice', 'Bob', 'Candy', 'David', 'Ellena']
name_set = set(names)
a = 'Alice'
for i in name_set:
if a.lower() in i.lower():
print "True"
2021-03-31
d = {'Alice': [50, 61, 66, 1], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
a = 0
for x in d.keys():
a += 1
for y in d[x]:
a += 1
print a
a = 0
for x in d.keys():
a += 1
for y in d[x]:
a += 1
print a
2021-03-31
d = {'Alice': [50, 61, 66], 'Bob': [80, 61, 66], 'Candy': [88, 75, 90]}
for x, y in d.items():
for i in y:
print x, i
for x, y in d.items():
for i in y:
print x, i
2021-03-31
# Enter a code
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
x = 'Alice'
y = 'old_Alice'
if x in d:
d[y] = d[x]
d[x] = 60
print d
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
x = 'Alice'
y = 'old_Alice'
if x in d:
d[y] = d[x]
d[x] = 60
print d
2021-03-31
d = {
'Alice': [45],
'Bob': [60],
'Candy': [75],
}
a = [50, 61, 66]
b = [80, 61, 66]
c = [88, 75, 90]
sorse = {
'Alice': a,
'Bob': b,
'Candy': c,}
print sorse
for i in d.keys():
for x in sorse[i]:
d[i].append(x)
print d
'Alice': [45],
'Bob': [60],
'Candy': [75],
}
a = [50, 61, 66]
b = [80, 61, 66]
c = [88, 75, 90]
sorse = {
'Alice': a,
'Bob': b,
'Candy': c,}
print sorse
for i in d.keys():
for x in sorse[i]:
d[i].append(x)
print d
2021-03-31
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
a = ["Alice", "Bob", "Candy", "Mimi", "David"]
for i in a:
x = d.get(i)
print i, x
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
a = ["Alice", "Bob", "Candy", "Mimi", "David"]
for i in a:
x = d.get(i)
print i, x
2021-03-31
# Enter a code
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
d["Gaven"] = 86
print d
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
d["Gaven"] = 86
print d
2021-03-31