Since only d varies, we could store all potential values for d we want to test in a list like this all_d_values =. Now, say that you want to use map, because you like functional programming, or maybe because you come from a language that encourages this paradigm. In this problem, you want to compare how the function behaves when you vary only the last parameter. Let’s also suppose that you are solving a very specific problem that requires the first 3 arguments to be fixed. > def sum_four( a, b, c, d): return a + b + c + d Let’s imagine that you have a function called sum_four that takes 4 arguments and returns their sum. If you pass multiple iterables, you must pass a function that accepts that many arguments. The result is an iterator where each element is produced by the function you provided as argument. Let's go! What Is a Map Function and the Problem With ItĪ map() is a function that expects one or more iterables and a function as arguments.įor each item in these iterables, map applies the function passed as argument.
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