pyCookbook<dict,list,string>

list ==>

v = [1,2,3]

v.extend([12,13]) # iterator object 

v.append(10)

v.pop() # return last element

v.insert(index,value) # front is index later is value

v.sort(cmp) # sort , cmp is function user-defined

v.index(position) # if position > len , raise exception

v.reverse() # u know

v.count(value) # count

v.remove(value) # remove one value

dict ==>

d = {'a':1,'b':2}

d.keys() # return list

d.values() # return list of valuse 

d.setdefault(key,value) # if d[key] return d[key] else d[key] = value

d.get(key,value) # the same to front but

d.items() # return list of tuple

d.itervalues() # adapter # iterators of values

d.iterkeys() # same to front

d.iteritems() #  iterators once one key ,item

d.pop(key) # return value = d[key]

d.update(dict()) # new dict

d.clear() # so horrible

d.fromkeys(tuple,value) # u can use it to make dict quickly if all keys' value same but u should new a one copy

d.has_key(key) # judge d[key] ==> if key in d

tuple == >

v = (1,2,3)

set ==>

b = set() # set([]) list

b.add(value)

b.pop() # from front

b.remove(value)

b.update(value) # value ---- tuple ,list ,set ...

b.discard(value) # remove value in set

#-----------------------------#

zip =>

zip(list,list) # pair tuple in list

reduce =>

################## skills

dict([[y,x] for x,y in d.iteritems()])  # reverse key and value