主要是第一个 的范围包含的太大了 ，也可以这么改的
age = 20
if 18>age >= 6:
print 'teenager'
elif age >= 18:
print 'adult'
else:
print 'kid'
age = 20
if 18>age >= 6:
print 'teenager'
elif age >= 18:
print 'adult'
else:
print 'kid'
2017-02-27
python was started in 1989 by "guido".python is free and easy to learn.
2017-02-27
print [int(str(x)+str(y)+str(z))
for x in range(1, 10)
for y in range(0, 10)
for z in range(1, 10)
if x == z]
for x in range(1, 10)
for y in range(0, 10)
for z in range(1, 10)
if x == z]
2017-02-27
print [str(x) + str(y) + str(z)
for x in range(1, 10)
for y in range(0, 10)
for z in range(1, 10)
if x == z]
for x in range(1, 10)
for y in range(0, 10)
for z in range(1, 10)
if x == z]
2017-02-27
最新回答 / O_Jack
x1 = 1d = 3n = 100print 'xn = x1 + (n-1)d'x100 = x1+(n-1)*dprint 'x100 =',x100print 's = nx1 + n*(n-1)*d/2's = n*x1 +n*(n-1)*d/2print s
2017-02-27
L = ['Adam', 'Lisa', 'Bart', 'Paul']
for index, name in enumerate(L):
print index + 1, '-', name
for index, name in enumerate(L):
print index + 1, '-', name
