Chris

While working as a researcher in distributed systems, Dr. Christian Mayer found his love for teaching computer science students.To help students reach higher levels of Python success, he founded the programming education website Finxter.com that has taught exponential skills to millions of coders worldwide. He's the author of the best-selling programming books Python One-Liners (NoStarch 2020), The Art of Clean Code (NoStarch 2022), and The Book of Dash (NoStarch 2022). Chris also coauthored the Coffee Break Python series of self-published books. He's a computer science enthusiast, freelancer, and owner of one of the top 10 largest Python blogs worldwide.His passions are writing, reading, and coding. But his greatest passion is to serve aspiring coders through Finxter and help them to boost their skills. You can join his free email academy here.

Python __floordiv__() Magic Method

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Syntax object.__floordiv__(self, other) The Python __floordiv__() method implements the integer division operation // called floor division—as opposed to the true division operation /. For example to evaluate the expression x // y, Python attempts to call x.__floordiv__(y). If the method is not implemented, Python first attempts to call __rfloordiv__ on the right operand and if … Read more

Python __truediv__() Magic Method

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Syntax object.__truediv__(self, other) The Python __truediv__() method is called to implement the normal division operation / called true division—as opposed to the floor division operation //. For example to evaluate the expression x / y, Python attempts to call x.__truediv__(y). We call this a “Dunder Method” for “Double Underscore Method” (also called “magic method”). To … Read more

Python __matmul__() Magic Method

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Syntax object.__matmul__(self, other) The Python __matmul__() method is called to implement the matrix multiplication operation @. For example to evaluate the expression x @ y, Python attempts to call x.__matmul__(y). We call this a “Dunder Method” for “Double Underscore Method” (also called “magic method”). To get a list of all dunder methods with explanation, check … Read more

Python __mul__() Magic Method

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Syntax object.__mul__(self, other) The Python __mul__() method is called to implement the arithmetic multiplication operation *. For example to evaluate the expression x * y, Python attempts to call x.__mul__(y). We call this a “Dunder Method” for “Double Underscore Method” (also called “magic method”). To get a list of all dunder methods with explanation, check … Read more

Python __sub__() Magic Method

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Syntax object.__sub__(self, other) Python’s object.__sub__(self, other) method returns a new object that represents the difference of two objects. It implements the subtraction operator – in Python. We call this a “Dunder Method” for “Double Underscore Method” (also called “magic method”). To get a list of all dunder methods with explanation, check out our dunder cheat … Read more

Python __add__() Magic Method

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Syntax object.__add__(self, other) Python’s object.__add__(self, other) method returns a new object that represents the sum of two objects. It implements the addition operator + in Python. We call this a “Dunder Method” for “Double Underscore Method” (also called “magic method”). To get a list of all dunder methods with explanation, check out our dunder cheat … Read more

Python __abs__()

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Syntax object.__abs__() Python’s object.__abs__() method returns the absolute value of the object and implements the built-in function abs(). The absolute value of any numerical input argument -x or +x is the corresponding positive value +x. However, you can overwrite the default behavior by defining a custom __abs__() method. We call this a “Dunder Method” for … Read more

Python Dunder Methods Cheat Sheet

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When searching for a list of dunder methods with explanations, i.e., a cheat sheet on Python magic methods, I only found a couple of resources all over the web—each covering only a fraction of dunder methods. So, here’s my collection of 127 dunder methods (also called “magic methods”) from those sources, sorted alphabetically. I provide … Read more