> s1 = ['bacon\n', 'eggs\n', 'ham\n', 'guido\n']
> s2 = ['python\n', 'eggy\n', 'hamster\n', 'guido\n']
> for line in context_diff(s1, s2, fromfile='before.py', tofile='after.py'):
...   sys.stdout.write(line) 
*** before.py
--- after.py
***************
*** 1,4 ****
! bacon
! eggs
! ham
 guido
--- 1,4 ----
! python
! eggy
! hamster
 guido

> get_close_matches('appel', ['ape', 'apple', 'peach', 'puppy'])
['apple', 'ape']
> import keyword
> get_close_matches('wheel', keyword.kwlist)
['while']
> get_close_matches('apple', keyword.kwlist)
[]
> get_close_matches('accept', keyword.kwlist)
['except']

> diff = ndiff('one\ntwo\nthree\n'.splitlines(1),
...       'ore\ntree\nemu\n'.splitlines(1))
> print ''.join(diff),
- one
"color: #800000">difflib.restore(sequence, which)

返回一个由两个比对序列产生的结果


示例


> diff = ndiff('one\ntwo\nthree\n'.splitlines(1),
...       'ore\ntree\nemu\n'.splitlines(1))
> diff = list(diff) # materialize the generated delta into a list
> print ''.join(restore(diff, 1)),
one
two
three
> print ''.join(restore(diff, 2)),
ore
tree
emu



difflib.unified_diff(a, b[, fromfile][, tofile][, fromfiledate][, tofiledate][, n][, lineterm])
比较a与b(字符串列表)，返回一个unified diff格式的差异结果.


示例：


> s1 = ['bacon\n', 'eggs\n', 'ham\n', 'guido\n']
> s2 = ['python\n', 'eggy\n', 'hamster\n', 'guido\n']
> for line in unified_diff(s1, s2, fromfile='before.py', tofile='after.py'):
...  sys.stdout.write(line) 
--- before.py
+++ after.py
@@ -1,4 +1,4 @@
-bacon
-eggs
-ham
+python
+eggy
+hamster
 guido



实际应用示例
比对两个文件，然后生成一个展示差异结果的HTML文件


#coding:utf-8
'''
file:difflibeg.py
date:2017/9/9 10:33
author:lockey
email:lockey@123.com
desc:diffle module learning and practising 
'''
import difflib
hd = difflib.HtmlDiff()
loads = ''
with open('G:/python/note/day09/0907code/hostinfo/cpu.py','r') as load:
 loads = load.readlines()
 load.close()

mems = ''
with open('G:/python/note/day09/0907code/hostinfo/mem.py', 'r') as mem:
 mems = mem.readlines()
 mem.close()

with open('htmlout.html','a+') as fo:
 fo.write(hd.make_file(loads,mems))
 fo.close()



运行结果：

生成的html文件比对结果：

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。