From Python version 2.6 on you can use multiple arguments to set.intersection(), like
Copyu = set.intersection(s1, s2, s3)
If the sets are in a list, this translates to:
Copyu = set.intersection(*setlist)
where *a_list is list expansion
Note that set.intersection is not a static method, but this uses the functional notation to apply intersection of the first set with the rest of the list. So if the argument list is empty this will fail.
W3Schools
w3schools.com › python › ref_set_intersection.asp
Python Set intersection() Method
Python Examples Python Compiler ... x.intersection(y) print(z) Try it Yourself » · The intersection() method returns a set that contains the similarity between two or more sets....
Top answer 1 of 7
709
From Python version 2.6 on you can use multiple arguments to set.intersection(), like
Copyu = set.intersection(s1, s2, s3)
If the sets are in a list, this translates to:
Copyu = set.intersection(*setlist)
where *a_list is list expansion
Note that set.intersection is not a static method, but this uses the functional notation to apply intersection of the first set with the rest of the list. So if the argument list is empty this will fail.
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111
As of 2.6, set.intersection takes arbitrarily many iterables.
Copy>>> s1 = set([1, 2, 3])
>>> s2 = set([2, 3, 4])
>>> s3 = set([2, 4, 6])
>>> s1 & s2 & s3
set([2])
>>> s1.intersection(s2, s3)
set([2])
>>> sets = [s1, s2, s3]
>>> set.intersection(*sets)
set([2])
Videos
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Set Intersection in Python Tutorial
GeeksforGeeks
geeksforgeeks.org › python › intersection-function-python
Intersection() function Python - GeeksforGeeks
April 18, 2026 - The set.intersection() method in Python returns a new set containing only the elements that are common to all given sets. It compares two or more sets and keeps only shared values.
FavTutor
favtutor.com › blogs › set-intersection-python
Python Set Intersection with Examples and Codes
December 9, 2023 - The output after performing the intersection will also be an empty set as there are no common elements in the given sets. For example: ... The & operator or the intersection() method in Python can be used to execute an intersection of multiple sets.
Programiz
programiz.com › python-programming › methods › set › intersection
Python Set intersection()
The intersection() method returns a new set with elements that are common to all sets.
Jobtensor
jobtensor.com › Tutorial › Python › en › Set-Methods-intersection
Python Set intersection(), Definition, Syntax, Parameters, Examples | jobtensor
The intersection() method returns a set that contains the similarity between two or more sets.
Towards Data Science
towardsdatascience.com › home › latest › finding the intersection of python sets: a practical use case
Finding the Intersection of Python Sets: A Practical Use Case | Towards Data Science
March 5, 2025 - One of the most popular python set operations is to find the intersection of two or more sets, which can be easily done using Python’s set.intersection() method.
CodeSignal
codesignal.com › learn › courses › hashing-dictionaries-and-sets-in-python › lessons › mastering-python-sets-intersection-non-repeating-elements-and-unique-elements
Mastering Python Sets: Intersection, Non-Repeating ...
What this operation accomplishes is iterate through list1, add each element to set1, and ensure that no duplicates are added. In the next step, we find the intersection of our newly formed sets using the ampersand operator (&), akin to this: intersection = set1 & set2.
Top answer 1 of 6
40
I think you are simply looking for:
set(thingList1) & set(thingList2) & set(thingList3)
The ampersand is intersection in Python (and some other languages as well).
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4
set1 & set2 & set3
should work ... at least I think
>>> set((1,2,3)) & set((2,3,4)) & set((3,4,5))
set([3])
Codecademy
codecademy.com › docs › python › sets › .intersection()
Python | Sets | .intersection() | Codecademy
April 17, 2025 - The .intersection() method returns a new set with objects that exist inside two or more sets. It’s a fundamental set operation that mirrors the mathematical concept of intersection.
Profound Academy
profound.academy › python-introduction › set-unions-and-intersections-BR33bx7bC01yVYuFhNqC
Set unions and intersections • Introduction to Python
November 2, 2024 - The intersection of two sets includes all the elements that are present in both sets. So, in Python, it’s denoted as an “and” & operator (elements Both in A and B).
Medium
medium.com › @pies052022 › python-set-intersection-methods-with-best-examples-164a1f59b5b0
Python Set Intersection Methods with Best Examples | by JOKEN VILLANUEVA | Apr, 2026 | Medium
April 16, 2026 - Additional information from the Python official documentation, set intersection() returns a new set with elements common to the set and all others.
Naukri
naukri.com › code360 › library › intersection-in-python
Python Set intersection() Method
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Python-bloggers
python-bloggers.com › 2022 › 02 › python-set-intersection-the-ultimate-guide-for-beginners
Python Set Intersection – The Ultimate Guide for Beginners | Python-bloggers
February 7, 2022 - In the last week's article, you've learned what Python set difference() is all about. Now we'll explore another commonly used set function. Python set intersection allows you to find common elements between two or more sets.
Medium
medium.com › @zeebrockeraa › how-to-use-python-set-intersection-update-method-88b14fe230b
How To Use Python Set Intersection Update Method | by Zeeshan Ali | Medium
July 10, 2023 - The intersection update method takes the common items of all specified sets and updates the set calling that function with those values. So this set will contain only those common items.
Reddit
reddit.com › r/learnpython › & vs .intersection()
r/learnpython on Reddit: & vs .intersection()
July 24, 2024 -
Is there a difference between those? (in simple terms please,VERY new to Python)
Top answer 1 of 4
5
intersection is a function that’s called on an object(sets are a common one); and isn’t a built in syntactical token.& is a built in operator. For the latter to work __and__ or __rand__ must be implemented on one of the objects. Functionally they do(in the general case) find the intersection of two values, & being common for things such as ints; e.g. returning a new values where every set bit are bits set in both of the operands. That said, yes, there is a difference between the two. They execute completely different code, so you should never assume they do the same thing.
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SYNTAX inter = set1.intersection(set2) inter = set1 & set2 The above are the same functionally, there are nuances. In Python when this ‘operator’ that It means this.__operation__(that) e.g. #type/class definition def __eq__(self, other)-> bool: #equals (==) … res = (a == b) res = (a.__eq__(b)) Somewhere in a __dunder__ (double underscore) that we can alter if necessary, depending on the built in operators (+,-,=,>,<,…), the code will run. Intersection (&, __and__) is one of these operator. There is an __rand__ and this has to do with what if set2 has it, for comparing types, and set 1 doesn’t, so our types will ask the r, recursively/repeat, operation. As 10 - 4 != 4 - 10, but 2+3 == 3+2. But we have this. four = 1+1+1+1 four = 1.__add__(1.__add__(1.__add__(1))) A well defined order of operation, that no one wants to code with. But this is how Python operators work and we should understand that because we may want to manipulate it…(yeah that ADD not AND up there or is it?) …as sometimes we want to res = objA + objB res = objA + 1 # __add__’ res = 1 + objA # ‘__radd__’ #int(1) calls The built in function are built in and optimized for you. Understanding datatypes is where we are at. (And we are exiting the scope of the question.) M
AWS
aws.amazon.com › blogs › machine-learning › from-developer-desks-to-the-whole-organization-running-claude-cowork-in-amazon-bedrock
From developer desks to the whole organization: Running Claude Cowork in Amazon Bedrock | Artificial Intelligence
April 21, 2026 - For example, a product manager is planning a new notification feature for a university athletics app hosted on AWS. They have customer meeting notes that point in different directions, a set of project requirements, and limited time to reconcile them.
W3Schools
w3schools.com › python › python_sets_join.asp
Python - Join Sets
There are several ways to join two or more sets in Python. The union() and update() methods joins all items from both sets. The intersection() method keeps ONLY the duplicates.
Web Restaurant Store
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Sr. Marketing Data Analyst | Lititz, PA | WebstaurantStore Careers
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docs.python.org
docs.python.org › 3 › library › sets.html
Built-in Types — Python 3.14.6 documentation
The following sections describe the standard types that are built into the interpreter. The principal built-in types are numerics, sequences, mappings, classes, instances and exceptions. Some colle...