初识Python_技术问答

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初识Python

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corySoft

sum = 0
x = 1
n = 1
while True:
if n > 20:
break
sum += x
x = x*2
n +=1
print sum

0 5-6 Python之 break退出循环

2015-04-29

corySoft

居然有这么多方法，让我情何以堪

0 5-5 Python之 while循环

2015-04-29

匣子洁

print [x*(x+1) for x in range(1,100,2)]

0 10-1 生成列表

2015-04-29

Dan_ye

print [x for x in range(100,1000)if(x/100==x%10)]

1 10-4 多层表达式

2015-04-28

amazing100

输出倒序应该是
print L[::-1]

0 4-3 Python之倒序访问list

2015-04-28

qq_华_32

学的过程中，发现数学公式都不记得了啊

0 7-4 Python函数之返回多值

2015-04-28

匣子洁

d = { 'Adam': 95, 'Lisa': 85, 'Bart': 59, 'Paul': 74 }

sum = 0.0

for k, v in d.iteritems():
sum = sum + v
print k,':',v

print 'average', ':',sum/len(d)

0 9-4 迭代dict的key和value

2015-04-28

匣子洁

d = { 'Adam': 95, 'Lisa': 85, 'Bart': 59, 'Paul': 74 }
sum = 0.0
for i in d.itervalues():
sum=sum+i
print sum/len(d)

0 9-3 迭代dict的value

2015-04-28