本文实例讲述了Python实现对文件进行单词划分并去重排序操作。分享给大家供大家参考，具体如下：

文件名：test1.txt

文件内容：

But soft what light through yonder window breaks

It is the east and Juliet is the sun

Arise fair sun and kill the envious moon

Who is already sick and pale with grief

样例输出：

Enter file name: "test1.txt"

['Arise', 'But', 'It', 'Juliet', 'Who', 'already', 'and', 'breaks', 'east', 'envious', 'fair', 'grief', 'is', 'kill', 'light', 'moon', 'pale', 'sick', 'soft', 'sun', 'the', 'through', 'what', 'window', 'with', 'yonder']

PR4E 用 append的写法：（二重循环）

import sys

fname = input("Enter file name: ")

fh = open(fname)

lst = list()

for line in fh:

line = line.rstrip()

words = line.split()

for word in words:

if word not in lst:

lst.append(word)

lst.sort()

print(lst)

自己一重循环写法：

import string

fname = input("Enter file name: ")

fh = open(fname)

l = list()

for line in fh:

line = line.rstrip()

l = l + list(line.split())

s = list(set(l))

s.sort()

print(s)

PS：这里再为大家提供几款相关工具供大家参考使用：

希望本文所述对大家Python程序设计有所帮助。