L = [75, 92, 59, 68]
sum = 0.0
for score in L:
print score
sum=L[0]+L[1]+L[2]+L[3]
print sum / 4.0
sum = 0.0
for score in L:
print score
sum=L[0]+L[1]+L[2]+L[3]
print sum / 4.0
2017-02-25
当age=20时
if age >= 6:
print 'teenager'到这里就为True了,就直接打印'teenager'了
所以改成:
age = 20
if age >= 18:
print 'adult'
elif age >= 6:
print 'teenager'
else:
print 'kid'
if age >= 6:
print 'teenager'到这里就为True了,就直接打印'teenager'了
所以改成:
age = 20
if age >= 18:
print 'adult'
elif age >= 6:
print 'teenager'
else:
print 'kid'
2017-02-25
【一】慕课运行代码
print 45678+0x12fd2
print "Learn Python in imooc"
print 100 < 99
print 0xff == 255
【1】整数,运算;print 数字直接运算(注意空格)
【2】字符串;print“abc”或者‘abc’
【二】命令提示符运行代码
print(45678+0x12fd2)
print("Learn Python in imooc")
print(0xff==255)
(都需要用括号括起来)
print 45678+0x12fd2
print "Learn Python in imooc"
print 100 < 99
print 0xff == 255
【1】整数,运算;print 数字直接运算(注意空格)
【2】字符串;print“abc”或者‘abc’
【二】命令提示符运行代码
print(45678+0x12fd2)
print("Learn Python in imooc")
print(0xff==255)
(都需要用括号括起来)
2017-02-25
def square_of_sum(L):
sum=0
for x in L:
sum=sum+x*x
return sum
sum=0
for x in L:
sum=sum+x*x
return sum
2017-02-25
def ljx(x):
L = []
for a in x:
L.append(a*a)
return sum(L)
print ljx([1, 2, 3, 4, 5])
print ljx([-5, 0, 5, 15, 25])
L = []
for a in x:
L.append(a*a)
return sum(L)
print ljx([1, 2, 3, 4, 5])
print ljx([-5, 0, 5, 15, 25])
2017-02-25
print [a*100+b*10+c for a in range(1,10) for b in range(0,10) for c in range(1,10) if a==c]
2017-02-25