看到第一反应用以前C的方法，if (100*a+10*b+c)/100 + ((100*a+10*b+c)%10-((100*a+10*b+c)%100)*10)*10 + ((100*a+10*b+c)%100-((100*a+10*b+c)%10-((100*a+10*b+c)%100)*10)*10) == (100*a+10*b+c)] 代码有误(逃... 没想到a == b 笨哭了
2016-02-18
d = { 'Asam': 95, 'Lisa': 85, 'Bart': 59, 'Paul': 74 }
sum = 0.00
for v in d.itervalues():
print v
sum = sum + v
print sum/len(d)
sum = 0.00
for v in d.itervalues():
print v
sum = sum + v
print sum/len(d)
2016-02-18
sum = 0
x = 0
while True:
x = x + 1
if x > 100:
break
a = x / 2
if a == (x / 2.0):
continue
sum = sum + x
print sum
x = 0
while True:
x = x + 1
if x > 100:
break
a = x / 2
if a == (x / 2.0):
continue
sum = sum + x
print sum
2016-02-18
已采纳回答 / 逗逗船长
这一段最先被执行的部分是 L and isinstance(x,str) 然后再对这个表达式的值迭代（虽然这个式子返回布尔值并不能迭代，不过这不是重点）重点是x得有值才能被引用，然而在迭代了之后x才被赋值，并且执行到isinstance(x,str)时迭代还没开始所以你的写法有问题
2016-02-18
d = { 'Adam': 95, 'Lisa': 85, 'Bart': 59, 'Paul': 74 }
sum = 0.0
for x in d.values():
sum = sum + x
print sum/len(d.values())
sum = 0.0
for x in d.values():
sum = sum + x
print sum/len(d.values())
2016-02-18
L = [95.5, 85, 59]
print L[-1]
print L[-2]
print L[-3]
print L[-4]
print L[-1]
print L[-2]
print L[-3]
print L[-4]
2016-02-18
def greet(a='world.'):
print 'Hello,', a
greet()
greet('Bart')
print 'Hello,', a
greet()
greet('Bart')
2016-02-18