How can i compare two list of dictionaries

How can i compare two list of dictionaries

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list1:


[
    {'id': 1, 'location': 'Mumbai', 'job_description': 'python'},
    {'id': 2, 'location': 'Bengaluru', 'job_description': 'software engineer'}
]


list2:

[
    {'preferred_location': 'Bengaluru', 'skills': 'python'},
    {'preferred_location': 'Hyderabad', 'skills': 'java'},
    {'preferred_location': 'Cochin', 'skills': 'angular'}
]

How can i compare first list with second list as per location. from first list of location should match with second list prefered location.

And the expected resule will be

        [
            {'id': 2, 'location': 'Bengaluru', 'job_description': 'software engineer'}
        ]

Because "location" of first list matches with "preferred_location" of second list2 and will display foo that only


Let's employ list comprehensions to solve this problem.

list1 =[{'id': 1, 'location': 'Mumbai', 'job_description': 'python'},
    {'id': 2, 'location': 'Bengaluru', 'job_description': 'software engineer'}]


list2=[{'preferred_location': 'Bengaluru', 'skills': 'python'},
    {'preferred_location': 'Hyderabad', 'skills': 'java'},
    {'preferred_location': 'Cochin', 'skills': 'angular'}]

list2_locations= [i['preferred_location'] for i in list2]

list2_locations
     ['Bengaluru', 'Hyderabad', 'Cochin']

list1_final = [i for i in list1 if i['location'] in list2_locations]

list1_final
     [{'id': 2, 'job_description': 'software engineer', 'location': 'Bengaluru'}]

Python Compare Two Lists of Dictionaries, In this post, we look at how to compare two lists of dictionaries in Python and also print out the differences between the two lists.The comparison  Ways to sort list of dictionaries using values in python Compare define() vs const in PHP What are the differences between compareTo() and compare() methods in Java?


You can use a list comprehension, keeping the dictionaries in list1 where the locations match:

r1 = range(len(list1))
r2 = range(len(list2))
[list1[j] for i in r2 for j in r1 if list1[j]['location'] ==
                                     list2[i]['preferred_location']]


[{'id': 2, 'location': 'Bengaluru', 'job_description': 'software engineer'}]

Python, The difference of two lists have been discussed many a times, but sometimes we have a large number of data and we need to find the difference i.e the elements  By using zip we can iterate over two dictionaries at a time. We then iterate over the items of the first dictionary and compare the value with the corresponding value in the second dictionary. If these are not equal, then we print the key and both values.


you can also use use pandas

df1 = pd.DataFrame(
[
{'id': 1, 'location': 'Mumbai', 'job_description': 'python'},
{'id': 2, 'location': 'Bengaluru', 'job_description': 'software engineer'}
]).set_index('location').reset_index()


df2 = pd.DataFrame(
[
{'preferred_location': 'Bengaluru', 'skills': 'python'},
{'preferred_location': 'Hyderabad', 'skills': 'java'},
{'preferred_location': 'Cochin', 'skills': 'angular'}
]).set_index('preferred_location').reset_index()


df3 = df2.merge(df1, how='inner', left_on='preferred_location', right_on='location')

del df3['location']

df3.to_dict('records')

How to check whether two lists of dictionaries have the same/similar , Optimisation 1: don't use the foreach loop you can speed it up by a factor of 2 if you only compare items of the first array with items of the second array that have​  Write a function to compare two dictionaries by comparing each of their key value pairs. Use an OrderedDict if that makes it more convenient for you. In the lists of dictionaries you need to compare each dict in your first list to each list in you


import pandas as pd

list1 = [{'id': 1, 'location': 'Mumbai', 'job_description': 'python'}, 
{'id': 2, 'location': 'Bengaluru', 'job_description': 'software engineer'}
]
list2 = [{'preferred_location': 'Bengaluru', 'skills': 'python'}, 
{'preferred_location': 'Hyderabad', 'skills': 'java'}, 
{'preferred_location': 'Cochin', 'skills': 'angular'}
]

df1 = pd.DataFrame(list1)
df2 = pd.DataFrame(list2)

df3 = df1.merge(df2, left_on='location', right_on='preferred_location', how='inner')


list_final = list(df3.T.to_dict().values())

print(list_final)

Output:

[{'id': 2, 'job_description': 'software engineer', 'location': 'Bengaluru', 'preferred_location': 'Bengaluru', 'skills': 'python'}]

How to compare two different dictionary values in Python, He get all values in dictionary like list. >>> lst = map(compare, dict1.values(), dict2.values()). map is generator. You must use loop 'for  Two popular methods of comparison are set () and cmp (). The set () function creates an object that is a set object. The cmp () function is used to compare two elements or lists and return a value based on the arguments passed. In this tutorial you will learn how to compare two lists with the help of set (), cmp (), and difference () functions.


Comparing Dictionaries and Lists, Abstract Differences Between Lists and Dictionaries. Dictionaries are similar to lists, except instead of using a numerical index to insert and retrieve an "item",  In this article you can see how to compare two dictionaries in python: if their keys match; the difference in the keys; the difference in the values; The first check is to verify that two dictionaries have equal keys. Below you can find code which check the keys:


Python Dictionary(Dict): Update, Cmp, Len, Sort, Copy, Items, str , Python List cmp() Method. The compare method cmp() is used in Python to compare values and keys of two dictionaries. If method returns 0 if  Compare two dictionaries using Python. # Find countries where the amount of exports matches the amount of imports importers. items & exporters. items ()


Intersection of subset between two lists of dicts, def lists_of_dicts_intersection_on(keys, list0, list1): """Return a list of the dictionaries in list0 that compare equal on keys to some dictionary in  2 Answers. The .keys () method on a dictionary is going to return a list. You can't just compare that whole list to each item in the other list, you have to compare item to item. Also, you have to use the parameter names that you defined, dictArg and keysListArg, not my_list and my_dict.