sum = 0
x = 0
while True:
x = x + 1
if x > 100:
break
if x % 2 == 0:
continue
sum += x
print sum
x = 0
while True:
x = x + 1
if x > 100:
break
if x % 2 == 0:
continue
sum += x
print sum
2016-09-29
sum = 0
x = 1
n = 1
while True:
sum += x
x *= 2
n += 1
if n > 20:
break
print sum
x = 1
n = 1
while True:
sum += x
x *= 2
n += 1
if n > 20:
break
print sum
2016-09-29
sum=1
x=1
while True:
sum=sum+x
x=2x
if x>(2*19)
break
print (sum)
x=1
while True:
sum=sum+x
x=2x
if x>(2*19)
break
print (sum)
2016-09-29
import math
def quadratic_equation(a, b, c):
x1 = (-b + math.sqrt(b*b-4*a*c))/(2*a)
x2 = (-b - math.sqrt(b*b-4*a*c))/(2*a)
return x1,x2
print quadratic_equation(2, 3, 0)
print quadratic_equation(1, -6, 5)
def quadratic_equation(a, b, c):
x1 = (-b + math.sqrt(b*b-4*a*c))/(2*a)
x2 = (-b - math.sqrt(b*b-4*a*c))/(2*a)
return x1,x2
print quadratic_equation(2, 3, 0)
print quadratic_equation(1, -6, 5)
2016-09-29
s = set(['Adam', 'Lisa', 'Paul'])
L = ['Adam', 'Lisa', 'Bart', 'Paul']
for i in L:
if i in s:
s.remove(i)
else:
s.add(i)
print s
L = ['Adam', 'Lisa', 'Bart', 'Paul']
for i in L:
if i in s:
s.remove(i)
else:
s.add(i)
print s
2016-09-28
s = set([('Adam', 95), ('Lisa', 85), ('Bart', 59)])
for x in s:
print x[0], ':', x[1]
for x in s:
print x[0], ':', x[1]
2016-09-28
这是考我英文的节奏啊, 关键是 还考倒我了;
months = set(['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'])
x1 = 'Feb'
x2 = 'Sun'
if x1 in months:
print 'x1: ok'
else:
print 'x1: error'
if x2 in months:
print 'x2: ok'
else:
print 'x2: error'
months = set(['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'])
x1 = 'Feb'
x2 = 'Sun'
if x1 in months:
print 'x1: ok'
else:
print 'x1: error'
if x2 in months:
print 'x2: ok'
else:
print 'x2: error'
2016-09-28
d = {
95: 'Adam',
85: 'Lisa',
59: 'Bart'
}
d[72] = 'Paul'
print d
#壮哉我大Paul
95: 'Adam',
85: 'Lisa',
59: 'Bart'
}
d[72] = 'Paul'
print d
#壮哉我大Paul
2016-09-28
这道题的答案检查有问题，即使你输出正确，但是代码中不包含<td style="color:red">也是错的。
换句话说，这道题的答案检查的不是输出正确，而是代码中是否包含了上述字符串，这道题这样是不行的。
换句话说，这道题的答案检查的不是输出正确，而是代码中是否包含了上述字符串，这道题这样是不行的。
2016-09-28