Python之difflib模块

difflib 模块包含一些用来计算和处理序列之间差异的工具。它对于比较文本尤其有用，其中包含的函数可以使用多种常用差异格式生成报告。

import  difflib
text1 = '1234'
text2 = '2234'
d = difflib.HtmlDiff()
with open("passwd.html", 'w') as f:
    f.write(d.make_file(text1, text2))

import  difflib

# ['', '1 line', '2 line']
text1 = '''  
    1. Beautiful is better than ugly.
    2. Explicit is better than implicit.
    3. Simple is better than complex.
    4. Complex is better than complicated.
'''.splitlines(keepends=True)


text2 = '''  
    1. Beautifu  is better than ugly.
    2. Explicit is better than implicit.
    3. Simple is better than complex.
    4. Complex is better than complicated.
'''.splitlines(keepends=True)



# 1. 以字符串方式展示两个文本的不同， 效果如下:
d = difflib.Differ()
result = list(d.compare(text1, text2))
result = " ".join(result)
print(result)
"""
 -     1. Beautiful is better than ugly.
 ?                ^
 +     1. Beautifu  is better than ugly.
 ?                ^
       2. Explicit is better than implicit.
       3. Simple is better than complex.
       4. Complex is better than complicated.
"""


# 2. 以html方式展示两个文本的不同， 浏览器打开:
d = difflib.HtmlDiff()
with open("passwd.html", 'w') as f:
    f.write(d.make_file(text1, text2))

# 2. 以html方式展示两个文本的不同， 浏览器打开:
d = difflib.HtmlDiff()
with open("passwd.html", 'w') as f:
    f.write(d.make_file(text1, text2))