L = ['Adam', 'Lisa', 'Bart']
L[0]='Bart'
L[-1]='Adam'
print L
L[0]='Bart'
L[-1]='Adam'
print L
2016-04-22
L = ['Adam', 'Lisa', 'Paul', 'Bart']
L.pop(2)
L.pop(2)
print L
我写的 ,看到参考代码才知道人家高明哦
L.pop(2)
L.pop(2)
print L
我写的 ,看到参考代码才知道人家高明哦
2016-04-22
sum = 0
x = 1
n = 1
while True:
sum=sum+x
n=n+1
x=x*2
if n>20:
break
print sum
x = 1
n = 1
while True:
sum=sum+x
n=n+1
x=x*2
if n>20:
break
print sum
2016-04-22
L = [95.5, 85, 59]
print [-1]
print [-2]
print [-3]
print [0]
答案为啥要出现报错的代码?
print [-1]
print [-2]
print [-3]
print [0]
答案为啥要出现报错的代码?
2016-04-22
d = {
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for key,value in d.items():
print key+':',value
'Adam': 95,
'Lisa': 85,
'Bart': 59
}
for key,value in d.items():
print key+':',value
2016-04-22