if判断
a= 1
if a>10:
print 'a大于10'
print 'a小于10'
a = -20
if a > 10:
print ('a > 10')
elif a==...abc)
abc -= 1
for循环
a = dict(a=1,b=2,c=3)
print a
for i,j in a.items():
print (i,j)
enumerate函数...x = ['a','b','c']
for k,v in enumerate(x):
print (k,v)
range函数
for i in range(1,11):
for k in...range(1,i):
print k,
k +=1
i +=1
print "\n",
xrange函数
print (range(10))
print