Please implement the function both_ends(s). Given a string s, return a string made of the first 2 and the last 2 chars of the original string, so 'employee' yields 'emee', and ’er’ yields 'erer' (since the first 2 and the last 2 chars are both 'er') However, if the string length is less than 2, return instead the empty string. The function takes a string s as its argument.    Please write python code

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