我需要帮助,尝试使用difflib比较两个字典。我的程序采用2个json文件,将其转换为python字典。然后,我想使用difflib在这两个字典上显示差异。
正确使用difflib的方法是什么?
#!/usr/bin/env python2
import json
import collections
import difflib
import pprint
def get_json():
file_name = raw_input("Enter name of JSON File: ")
with open(file_name) as json_file:
json_data = json.load(json_file)
return json_data
def convert(data):
if isinstance(data, basestring):
return str(data)
elif isinstance(data, collections.Mapping):
return dict(map(convert, data.iteritems()))
elif isinstance(data, collections.Iterable):
return type(data)(map(convert, data))
else:
return data
def main():
json1 = get_json()
json2 = get_json()
json1_dict = convert(json1)
json2_dict = convert(json2)
result = list(difflib.Differ.compare(json1_dict, json2_dict))
pprint.pprint(result)
if __name__ == "__main__":
main()
JSON 示例:
{
"glossary": {
"title": "example glossary",
"GlossDiv": {
"title": "S",
"GlossList": {
"GlossEntry": {
"ID": "SGML",
"SortAs": "SGML",
"GlossTerm": "Standard Generalized Markup Language",
"Acronym": "SGML",
"Abbrev": "ISO 8879:1986",
"GlossDef": {
"para": "A meta-markup language, used to create markup languages such as DocBook.",
"GlossSeeAlso": [
"GML",
"XML"
]
},
"GlossSee": "markup"
}
}
}
}
}
在第二个文件中将ID的值更改为“1234”
我想比较这两个文件并得到以下输出:
{
"glossary": {
"title": "example glossary",
"GlossDiv": {
"title": "S",
"GlossList": {
"GlossEntry": {
- "ID": "SGML",
+ "ID": "1234",
"SortAs": "SGML",
"GlossTerm": "Standard Generalized Markup Language",
"Acronym": "SGML",
"Abbrev": "ISO 8879:1986",
"GlossDef": {
"para": "A meta-markup language, used to create markup languages such as DocBook.",
"GlossSeeAlso": [
"GML",
"XML"
]
},
"GlossSee": "markup"
}
}
}
}
}
Differ.compare
是一个实例方法。你的convert
函数除了去掉Unicode字符串外还有其他用途吗?无论如何,difflib
只能处理行序列,而不能处理像字典这样的任意对象。你的JSON文件中包含什么样的内容?你希望程序的输出是什么样子的? - Blckknght