python倒排索引（Inverted index）

发布网友发布时间：2022-04-21 15:31

共1个回答

热心网友时间：2023-11-14 20:18

s = raw_input()
lines = s.split('\n')
dictlines = lines[:100]
mydict = {}
# read
for i,line in enumerate(dictlines ):
    for word in line.split():
      mydict.setdefault(word,[]).append(i + 1)
# print indices
for word in mydict.keys():
    print "%s: %s"  % (word,", ".join(map(str,sorted(mydict[word]))))

def andSearch(words_list):
    global mydict
    a = set(range(1,101))
    for word in words_list:
        a = a.intersection(set(mydict[word]))
     return a

def orSearch(words_list):
    global mydict
    a = set([])
    for word in words_list:
        a = a.union(set(mydict[word]))
    return a

# Query
index = 100
u = lines[index]
while index < len(lines):
    words_list = u.split()
    if ":" in u:
        if words_list[0] == "OR:":
            a = orSearch(words_list)
        else:
            if words_list[0] == 'AND:':
               words_list = words_list[1:]
            a = andSearch(words_list)
    if not a:
        print ", ".join(map(str,list(a)))
    else:
        print "None"
    index += 1

大致思想就是这样。。。。。。。。