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jingyz_p1.py
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jingyz_p1.py
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# -*- coding: utf-8 -*-
import re
# remove all characters that are not a letter, number, or space character
def remove_char(text):
patt = re.compile('[^A-Za-z0-9 ]')
return patt.sub('', text)
# distinguish title -> all upper cases
# re: [A-Z(other )]+
def findTitle(text_list):
if text_list == '1. HOW THEY WENT TO THE MOUNTAINS TO EAT NUTS' or text_list == '2. HOW CHANTICLEER AND PARTLET WENT TO VISIT MR KORBES' or text_list == '3. HOW PARTLET DIED AND WAS BURIED, AND HOW CHANTICLEER DIED OF GRIEF':
return False
for text in text_list:
if text.islower():
return False
return True
# outer dict{word:inner dict{}}
# inner dict{title: list[line_number]}
# use setdefault(key,default)
def bodyText(w2s, title, line, linenumber):
for word in line:
innerDict = w2s.get(word, {})
innerList = innerDict.get(title, [])
innerList.append(linenumber)
innerDict[title] = innerList
w2s[word] = innerDict
def buildIndex():
stopwords_list = []
tales_list = [] # i=linenumber-125
w2s = {}
titles = []
grimms_file = open('grimms.txt', 'r', encoding='utf-8')
stopwords_file = open('stopwords.txt', 'r')
# build the list containing stopwords
for line in stopwords_file:
word = line.strip()
stopwords_list.append(word)
linenumber = 124
for line in grimms_file.readlines()[124:9182]:
tales_list.append(line.strip())
linenumber += 1
if(len(line) != 1): # space line: len==1
aline = line.strip()
if findTitle(aline):
titles.append(aline)
if aline not in titles:
aline = remove_char(aline)
words_list = aline.split()
# use set() to store unique values
filtered_words = set([word.lower() for word in words_list if not word.lower() in stopwords_list])
bodyText(w2s, titles[-1], filtered_words, linenumber)
grimms_file.close()
stopwords_file.close()
return (stopwords_list, tales_list, w2s, titles)
# !isOr: find if the queries are all in the query list is in the w2s dictionary
# isOr: find if any of the query is not in the query list is in the w2s dictionary
def inW2S(w2s, queryList, isOr):
if isOr:
for oneQuery in queryList:
if oneQuery in w2s:
return True
return False
else:
for oneQuery in queryList:
if oneQuery not in w2s:
return False
return True
# print the smallest block:
# 542 an **OWL** ...
def printItem(tales_list, query, num, qLen):
resString = tales_list[num - 125]
newSub = '**' + query.upper() + '**'
resString = resString.replace(query, newSub)
resString = resString.replace(query.capitalize(), newSub)
if qLen == 1:
print('\t ', num, resString)
else:
print('\t\t', num, resString)
# return frequency of certain word in each story
def countFrequency(tales_list, word, dict):
freDict = {}
for key in dict.keys():
count = 0
for num in dict[key]:
resString = tales_list[num - 125].strip().lower()
resString = remove_char(resString).split()
for i in range(len(resString)):
if resString[i] == word:
count = count + 1
freDict[key] = count
return freDict
def classifyOutput(isOr, isMore, isNear, w2s, talesCount, tales_list, queryList, frequency, numSet, numSet2):
talesPrint = []
freDict = dict()
freDict2 = dict()
if isOr:
talesPrint = [tale for tale in talesCount]
elif isMore:
onlyQuery = queryList[0]
if onlyQuery in w2s:
freDict = countFrequency(tales_list, onlyQuery, w2s[onlyQuery])
if frequency.isdigit():
talesPrint = [tale for tale in freDict if freDict[tale] > int(frequency)]
else:
if frequency not in w2s:
talesPrint = [tale for tale in freDict if freDict[tale] > 0]
else:
freDict2 = countFrequency(tales_list, frequency, w2s[frequency])
talesPrint = [tale for tale in freDict if (tale in freDict2 and freDict[tale] > freDict2[tale]) or tale not in freDict2]
elif isNear:
talesPre = [tale for tale in talesCount if talesCount[tale] == len(queryList)]
for tale in talesPre:
for num0 in w2s[queryList[0]][tale]:
if (num0 + 1) in w2s[queryList[1]][tale]:
numSet.add(num0)
numSet2.add(num0+1)
talesPrint.append(tale)
if (num0 - 1) in w2s[queryList[1]][tale]:
numSet.add(num0)
numSet2.add(num0-1)
talesPrint.append(tale)
if (num0) in w2s[queryList[1]][tale]:
numSet.add(num0)
numSet2.add(num0)
talesPrint.append(tale)
else:
talesPrint = [tale for tale in talesCount if talesCount[tale] == len(queryList)]
return (set(talesPrint), freDict, freDict2)
# print the main body of output
def printCore(talesPrint, w2s, tales_list, queryList, isOr, isNear, numSet, numSet2, isMore, freDict, freDict2, frequency):
lastQuery = queryList[-1]
for tale in talesPrint:
print("\t", tale)
if isMore:
if frequency.isdigit():
print("\t ",queryList[0],'appears',freDict[tale],'time(s) in this tale,','which is more than',frequency)
else:
if frequency in freDict2:
print("\t ",queryList[0],'appears',freDict[tale],'time(s) in this tale','WHILE',frequency,'appears',freDict2[tale],'time(s) in this tale')
else:
print("\t ",queryList[0],'appears',freDict[tale],'time(s) in this tale','WHILE',frequency,'appears 0 time in this tale')
if isNear:
queryList = queryList[0:1]
for oneQuery in queryList:
if isOr:
print("\t ", oneQuery)
if oneQuery not in w2s.keys():
print('\t\t--')
else:
if tale not in w2s[oneQuery]:
print('\t\t--')
else:
for num in w2s[oneQuery][tale]:
printItem(tales_list, oneQuery, num, len(queryList))
elif isNear:
print('\t ','Lines containing',oneQuery,':')
for num in numSet:
if num in w2s[oneQuery][tale]:
printItem(tales_list, oneQuery, num, 1)
print('\t ','Nearby lines containing',lastQuery,':')
for num in numSet2:
if num in w2s[oneQuery][tale]:
printItem(tales_list, lastQuery, num, 1)
else:
if len(queryList) != 1:
print("\t ", oneQuery)
for num in w2s[oneQuery][tale]:
printItem(tales_list, oneQuery, num, len(queryList))
def searchWords(w2s, tales_list, query):
print("query = ", query)
query = query.lower()
queryList = []
isOr = ' or ' in query
isAnd = ' and ' in query
isMore = ' morethan ' in query
isNear = ' near ' in query
talesPrint = []
numSet = set() # for near
numSet2 = set()
frequency = 0
if isMore:
queryList = query.split(' morethan ')[0:1]
frequency = query.split(' morethan ')[1]
elif isAnd:
queryList = query.split(' and ')
elif isOr:
queryList = query.split(' or ')
elif isNear:
queryList = query.split(' near ')
else:
queryList = query.split()
talesCount = {}
if not inW2S(w2s, queryList, isOr):
print('\t--')
else:
for oneQuery in queryList:
if oneQuery in w2s.keys():
for key in w2s[oneQuery].keys():
count = talesCount.get(key, 0) + 1
talesCount[key] = count
(talesPrint, freDict, freDict2) = classifyOutput(isOr, isMore, isNear, w2s, talesCount, tales_list, queryList, frequency, numSet, numSet2)
if len(talesPrint) == 0:
print('\t--')
else:
printCore(talesPrint, w2s, tales_list, queryList, isOr, isNear, numSet, numSet2, isMore, freDict, freDict2, frequency)
def main():
(stopwords_list, tales_list, w2s, titles) = buildIndex()
print('Loading stopwords...')
print(stopwords_list)
print('')
print('Building index...')
for i in range(len(titles)):
print(i + 1, titles[i])
print('')
print("Welcome to the Grimms' Fairy Tales search systems!")
print('')
query = input("Please enter your query: ")
while query != 'qquit':
if query == 'qquit':
exit(0)
searchWords(w2s, tales_list, query)
query = input("Please enter your query:")
if __name__ == "__main__":
main()
# Feb 12