用Python進行詞頻統計

def

gettext()
:    txt =
open
("hamlet.txt"
,"r"
).read(
)#讀取檔案
txt = txt.lower(
)#把文字全部變為小寫
for ch in
'|"#$%&^()*+,-./:;<>=?@\\_『{}~'
:#把特殊字元變為空格
txt = txt.replace(ch,
" ")
return txt
hamlettext = gettext(
)words = hamlettext.split(
)#把檔案變為乙個單詞列表
counts =
#定義字典
for word in words:
counts[word]
= counts.get(word,0)
+1items =
list
(counts.items())
#把字典變為列表
items.sort(key=
lambda x:x[1]
,reverse =
true
)#按照詞頻降序排列,要記住，常用
for i in
range(10
):#輸出詞頻前10的單詞
word, count = items[i]
print(""
.format
(word,count)
)

import jieba

txt =
open
("threekingdoms.txt"
,"r"
,encoding=
"utf-8"
).read(
)words = jieba.lcut(txt)
#利用jieba庫進行分詞
counts =
for word in words:
iflen
(word)==1
:continue
else
:        counts[word]
= counts.get(word,0)
+1items =
list
(counts.items())
items.sort(key=
lambda x:x[1]
, reverse=
true
)for i in
range(15
):word, count = items[i]
print(""
.format
(word,count)
)

import jieba

txt =
open
("threekingdoms.txt"
,"r"
,encoding=
"utf-8"
).read(
)excludes =
words = jieba.lcut(txt)
#利用jieba庫進行分詞
counts =
for word in words:
iflen
(word)==1
:continue
elif word ==
"諸葛亮"
or word ==
"孔明曰"
:        rword =
"孔明"
elif word ==
"關公"
or word ==
"雲長"
:        rword =
"關羽"
elif word ==
"玄德"
or word ==
"玄德曰"
:        rword =
"劉備"
else
:        reword = word
counts[rword]
= counts.get(word,0)
+1for word in excludes:
del counts[word]
items =
list
(counts.items())
items.sort(key=
lambda x:x[1]
, reverse=
true
)for i in
range(15
):word, count = items[i]
print(""
.format
(word,count)
)

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