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11 Ιουν 2012 · Imagine you have a function that takes a number, adds 1 to that number and returns it: def add_one(num): new_num = num + 1 return new_num You also have a list of numbers: my_list = [1, 3, 6, 7, 8, 10] if you want to increment every number in the list, you can do the following: >>> map(add_one, my_list) [2, 4, 7, 8, 9, 11]
In this step-by-step tutorial, you'll learn how Python's map() works and how to use it effectively in your programs. You'll also learn how to use list comprehension and generator expressions to replace map() in a Pythonic and efficient way.
23 Οκτ 2024 · The map() function is a built-in function in Python, which applies a given function to each item of iterable (like list, tuple etc.) and returns a list of results or map object. Syntax : map( function, iterable ) Parameters : function: The function which is going to execute for each iterableiterable: A sequence or collection of iterable objects whi
3 Φεβ 2016 · You can just use a list comprehension: my_list = [1, 2, 3, 4, 5] my_new_list = [i * 5 for i in my_list] >>> print(my_new_list) [5, 10, 15, 20, 25] Note that a list comprehension is generally a more efficient way to do a for loop: my_new_list = [] for i in my_list: my_new_list.append(i * 5)
9 Νοε 2021 · The map() function (which is a built-in function in Python) is used to apply a function to each item in an iterable (like a Python list or dictionary). It returns a new iterable (a map object) that you can use in other parts of your code.
Syntax. map (function, iterables) Parameter Values. More Examples. Example. Make new fruits by sending two iterable objects into the function: def myfunc (a, b): return a + b. x = map(myfunc, ('apple', 'banana', 'cherry'), ('orange', 'lemon', 'pineapple')) Try it Yourself » Built-in Functions. W3schools Pathfinder. Log in Sign Up. Top Tutorials.
In this post, we discuss the working of the map() function, how to use the function to transform various iterables, and how to combine the function with other Python tools to perform more complex transformations.
