L=['Alice','Bob','Candy','David','Ellena']
L.pop(2)
L.pop(2)
print(L)
L.pop(2)
L.pop(2)
print(L)
2021-01-14
# Enter a code
s1="ABC"
s2="123"
s3="xyz"
for a in s1:
for b in s2:
for c in s3:
print(a+b+c)
print(a+c+b)
print(b+a+c)
print(b+c+a)
print(c+a+b)
print(c+b+a)
s1="ABC"
s2="123"
s3="xyz"
for a in s1:
for b in s2:
for c in s3:
print(a+b+c)
print(a+c+b)
print(b+a+c)
print(b+c+a)
print(c+a+b)
print(c+b+a)
2021-01-14
names=['Alice','Bob','Candy','David','Ellena']
names.insert(5,'Gen')
names.insert(6,'Phoebe')
names.append('Zero')
print(names)
names.insert(5,'Gen')
names.insert(6,'Phoebe')
names.append('Zero')
print(names)
2021-01-14
n=['95.5','85','59','66','72']
print(n[-5])
print(n[-4])
print(n[-1])
print(n[-5])
print(n[-4])
print(n[-1])
2021-01-14
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
s = d.get('Alice') #先获取原来的成绩赋值给变量s
d['Alice'] = 60 #更新成绩
print('Alice的原成绩：{}'.format(s),'\nAlice的现成绩：{}'.format(d.get('Alice')))
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
s = d.get('Alice') #先获取原来的成绩赋值给变量s
d['Alice'] = 60 #更新成绩
print('Alice的原成绩：{}'.format(s),'\nAlice的现成绩：{}'.format(d.get('Alice')))
2021-01-14
已采纳回答 / 慕仙3032168
你代码的逻辑是有问题的你这个代码运行之后，num一开始等于1；进入while循环后，再进入for循环，for循环本身就已经把字符串中的字符全部遍历了一遍并打印出来并且num=num+1执行了相当于字符串长度的次数，此时num>8 while跳出。最终导致的就是字符串中的字符全部被输出
2021-01-14
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)
2021-01-13
startnum = 1
endnum = 10
num = 1
while startnum < endnum:
num = num * (startnum + 1)
startnum = startnum + 1
print(num)
endnum = 10
num = 1
while startnum < endnum:
num = num * (startnum + 1)
startnum = startnum + 1
print(num)
2021-01-13
n=0
L=['Alice','66','Bob',True,'False',100]
for item in L:
n=n+1
if n%2!=0:
continue
print(item)
L=['Alice','66','Bob',True,'False',100]
for item in L:
n=n+1
if n%2!=0:
continue
print(item)
2021-01-13
d = {
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
list = list(d)
for i in list:
print(d.get(i))
'Alice': 45,
'Bob': 60,
'Candy': 75,
'David': 86,
'Ellena': 49
}
list = list(d)
for i in list:
print(d.get(i))
2021-01-13
