python type

  if name in counts:
      print counts[name]
  else :
      print 0
      
  print counts.get(name,0)

counts = dict()
names = ["cui","cesr","wu","ren"]

for name in names:
    if name not in counts:
        counts[name] = 1
    else:
      counts[name] = counts[name] + 1
print counts

counts = dict()
names = ["cui","cesr","wu","ren"]

for name in names:
    counts[name]=counts.get(name,0) + 1
print counts    

dict = {'name':1,'title':30,'num':90}

print list(dict)
>>>['name','title','num']

print dict.key()
>>>['name','title','num']

print dict.values()
>>>[1,30,90]

print dict.items()
>>>[('name',1)('title',30)('num',90)]


for aa,bb in dict.items()
    print aa,bb