14.Extract Unique Objects from a List in Python 🧠 | Learn in 10 Minutes
In this Python tutorial, you’ll learn how to remove duplicate objects (dictionaries) from a list — an essential skill for data cleaning and real-world applications.
We’ll walk you through the logic step-by-step so you understand why it works, not just how.
How to handle duplicate dictionaries in a list
Why dictionaries can't be added to sets directly
How to build a custom hashable identifier for comparison
Python tricks like sorted(obj.items()) and set usage
def get_unique_objects(arr):
seen = set()
unique_objects = []
for obj in arr:
identifier = str(sorted(obj.items()))
if identifier not in seen:
seen.add(identifier)
unique_objects.append(obj)
return unique_objects
👉 Output will only contain unique objects, ignoring key order and duplicates.
💡 Great for:
Beginners learning dictionary logic
Data scientists working with real-world data
Coding interviews that test attention to detail
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