這篇文章主要介紹了Python3處理文件中每個詞的方法,可實現逐個處理文件中每個詞的功能,需要的朋友可以參考下
本文實例講述了Python3處理文件中每個詞的方法。分享給大家供大家參考。具體實現方法如下:
- '''''''
- Created on Dec 21, 2012
- 處理文件中的每個詞
- @author: liury_lab
- '''
- import codecs
- the_file = codecs.open('d:/text.txt', 'rU', 'UTF-8')
- for line in the_file:
- for word in line.split():
- print(word, end = "|")
- the_file.close()
- # 若詞的定義有變,可使用正則表達式
- # 如詞被定義為數字字母,連字符或單引號構成的序列
- import re
- the_file = codecs.open('d:/text.txt', 'rU', 'UTF-8')
- print()
- print('************************************************************************')
- re_word = re.compile('[/w/'-]+')
- for line in the_file:
- for word in re_word.finditer(line):
- print(word.group(0), end = "|")
- the_file.close()
- # 封裝成迭代器
- def words_of_file(file_path, line_to_words = str.split):
- the_file = codecs.open('d:/text.txt', 'rU', 'UTF-8')
- for line in the_file:
- for word in line_to_words(line):
- yield word
- the_file.close()
- print()
- print('************************************************************************')
- for word in words_of_file('d:/text.txt'):
- print(word, end = '|')
- def words_by_re(file_path, repattern = '[/w/'-]+'):
- the_file = codecs.open('d:/text.txt', 'rU', 'UTF-8')
- re_word = re.compile('[/w/'-]+')
- def line_to_words(line):
- for mo in re_word.finditer(line):
- yield mo.group(0) # 原書為return,發現結果不對,改為yield
- return words_of_file(file_path, line_to_words)
- print()
- print('************************************************************************')
- for word in words_by_re('d:/text.txt'):
- print(word, end = '|')
希望本文所述對大家的Python程序設計有所幫助。
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