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Pythondifflib是Python标准库中的一个模块,用于比较和操作文本文件或字符串之间的差异

Python 𝄐 0
Python DiffLib gui
Pythondifflib是Python标准库中的一个模块,用于比较和操作文本文件或字符串之间的差异。

difflib提供了多个函数,可以生成包含两个序列差异的输出,其中最常见的是“unified diff”格式。此外,还可以使用它来构建差异工具、版本控制工具和合并工具等。

以下是一个使用Pythondifflib生成差异的简单示例:

python
import difflib

# 定义输入字符串
text1 = '''Python is a programming language that lets you work quickly
and integrate systems more effectively.'''

text2 = '''Python is an interpreted, high-level, general-purpose programming language.
Created by Guido van Rossum and first released in 1991.'''

# 将输入字符串转换为列表
list1 = text1.splitlines()
list2 = text2.splitlines()

# 创建一个Differ对象
differ = difflib.Differ()

# 比较两个列表,并生成差异结果
diff = differ.compare(list1, list2)

# 打印差异结果
print('\n'.join(diff))


输出:


- Python is a programming language that lets you work quickly
? ------
+ Python is an interpreted, high-level, general-purpose programming language.
+ Created by Guido van Rossum and first released in 1991.
- and integrate systems more effectively.


这里通过将两个输入字符串转换为列表,并利用Differ对象比较两个列表,最后生成差异结果并打印出来。在输出结果中,以-开头的表示text1独有的行,以+开头的表示text2独有的行。