# Merging two lists of dictionaries in Python using ‘+’ operator Example 1Ĭode for merging two lists of dictionaries in python using ‘+’ operator − Keep in mind that this operation does not modify the original list nor merge dictionaries with identical keys rather, it merges both lists into one new list where every dictionary, regardless of key, remains a standalone element. The final output should consist of one list containing all dictionaries from both input lists in their original order every dictionary remains independent with all key-value pairs maintained as per the original lists. Step 4 − Assign the results to variables. Concatenating both lists into a single one using ‘+’, not altering their original versions but creating one new list combining their elements together into a whole. Step 3 − Merge two lists together: Once we prepare the input, merge both lists together into one. Step 2 − Initializing two lists of Dictionaries, we define our input as two ‘Lists’ these ‘Lists’ each contain multiple Dictionaries that contain ‘key-value pairs’ as ‘keys’ and ‘values’ respectively. Step 1 − Open Jupyter Notebook in Anaconda prompt and start writing the code in its cell. Merging two Lists of Dictionaries in Python Using ‘+’ Operator We create a Python solution that merges two separate lists of dictionaries into a single, more manageable list - making subsequent data processing and analysis tasks more effective and efficient. In this article, merging two lists involve compiling all dictionaries from both lists into one large list, their order in this merged list will mirror how they appeared in their respective original lists, initially the order may contain only those from one original list followed by others from both original lists. Dictionaries provide more efficient use by holding key-value pairs unlike other data types which hold single values at a time as elements in them. Happy coding! You can learn more about Python on my blog.Problematic data structures include Python lists and dictionaries, these two structures being ordered collections that allow changes, while an unordered dictionary stores values like maps. We saw how to merge two dictionaries in Python using:Įach method had its own section with code examples that showed how to use them to merge dictionaries. You can use them to store data in key-value pairs. In this article, we talked about dictionaries in Python. In the code above, we used the |= to mege the key and value pairs in the tools dictionary into the devBio dictionary. The update() method is a built-in method that you can use to add data to dictionaries.Ĭonsider the dictionary below: devBio = How to Merge Two Dictionaries in Python Using the update() Method In this section, we'll discuss the different methods you can use to merge dictionaries in Python, along with code examples.Īll the examples you'll see in this article will involve the merging of two dictionaries, but you can merge as many as you want. The double asterisk/star operator ( **).In this article, you'll learn how to merge two dictionaries using the following: You can read about the different methods you can use to access, modify, add, and remove elements in a dictionary here. Dictionaries are one of the built-in data structures in Python.
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