1、a和world都是是true，所以or后的结果是true，输出时默认输出第一个单词，即python
2、b是空，即false，‘world’是非空，即为true，所以or后的结果是true，输出world
2、b是空，即false，‘world’是非空，即为true，所以or后的结果是true，输出world
1天前
d = {
'Alice': [45],
'Bob': [60],
'Candy': [75],
}
d['Alice'].append(50)
d['Alice'].append(61)
d['Alice'].append(66)
d['Bob'].append(80)
d['Bob'].append(61)
d['Bob'].append(66)
d['Candy'].append(88)
d['Candy'].append(75)
d['Candy'].append(90)
print(d)
'Alice': [45],
'Bob': [60],
'Candy': [75],
}
d['Alice'].append(50)
d['Alice'].append(61)
d['Alice'].append(66)
d['Bob'].append(80)
d['Bob'].append(61)
d['Bob'].append(66)
d['Candy'].append(88)
d['Candy'].append(75)
d['Candy'].append(90)
print(d)
1天前
L[0] = 'Ellena'
... L[1] = 'Alice'
... L[2] = 'Candy'
... L[3] = 'David'
... L[4] = 'Bob'
... print(L)
...
['Ellena', 'Alice', 'Candy', 'David', 'Bob']
... L[1] = 'Alice'
... L[2] = 'Candy'
... L[3] = 'David'
... L[4] = 'Bob'
... print(L)
...
['Ellena', 'Alice', 'Candy', 'David', 'Bob']
names =['Alice', 'Bob', 'Candy', 'David', 'Ellena']
... names.append('Zero')
... names.append('Phoebe')
... names.append('Gen')
... print(names)
...
...
['Alice', 'Bob', 'Candy', 'David', 'Ellena', 'Zero', 'Phoebe', 'Gen']
... names.append('Zero')
... names.append('Phoebe')
... names.append('Gen')
... print(names)
...
...
['Alice', 'Bob', 'Candy', 'David', 'Ellena', 'Zero', 'Phoebe', 'Gen']
['Alice', 'Bob', 'Candy', 'David', 'Ellena', 'Zero', 'Phoebe', 'Gen']
>>> names =['Alice', 'Bob', 'Candy', 'David', 'Ellena']
>>> names.insert(5,'Gen')
>>> names.insert(6,'phoebe')
>>> names.insert(7,'Zero')
>>> print(names)
['Alice', 'Bob', 'Candy', 'David', 'Ellena', 'Gen', 'phoebe', 'Zero']
>>> names =['Alice', 'Bob', 'Candy', 'David', 'Ellena']
>>> names.insert(5,'Gen')
>>> names.insert(6,'phoebe')
>>> names.insert(7,'Zero')
>>> print(names)
['Alice', 'Bob', 'Candy', 'David', 'Ellena', 'Gen', 'phoebe', 'Zero']
num = 1
... sum = 1
... while num <= 10:
... sum = sum * num
... num = num + 1
... print(sum)
... sum = 1
... while num <= 10:
... sum = sum * num
... num = num + 1
... print(sum)
2天前
L = [75,92,59,68,99]
... sum = 0.0
... for x in L:
... sum = sum + x
... print( sum + x )
...
492.0
... sum = 0.0
... for x in L:
... sum = sum + x
... print( sum + x )
...
492.0
3天前
s1 = '这是一句中英文混合的Python字符串'
s2 = 'Hello World!'
print(s1)
print(s2)
s2 = 'Hello World!'
print(s1)
print(s2)
5天前
template1 = 'Life is {a}, you need {b}'
print(template1.format(a='short', b='Python'))
print(template1.format(a='short', b='Python'))
num=1
sum=1
while num<=10:
sum=sum*num
num=num+1
print(sum)
sum=1
for num in range(1,11):
sum*=num
print(sum)
sum=1
while num<=10:
sum=sum*num
num=num+1
print(sum)
sum=1
for num in range(1,11):
sum*=num
print(sum)
2025-12-16
最新回答 / 周当家的
d = { 'Alice': 45, 'Bob': 60, 'Candy': 75, 'David': 86, 'Ellena': 49}for a in d.keys(): print(a,d.get(a))打印的地方有错误 把keys换成a
2025-11-13