Map is a common way to transform lists in most programming languages. In Python, map is a function that loops over a list and applies a function (that you provide) to each item. Your function receives ...

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We've tested nearly 30 models to find the the best blender for morning smoothies, frozen margaritas, and even emulsifying homemade mayo.

Catherine Rampell is an opinion columnist at The Washington Post and an anchor/co-host at MSNBC. She frequently covers economics, public policy, immigration and politics, with a special emphasis ...