How can I round a floating-point number to the nearest even digit with a precision of 4 decimal places in Python? I tried using the np.round function and the built-in round function, but they don’t seem to work for me. For example, with a negative number like -2.6825, I want the rounding to give me -2.6830, but it currently gives me -2.6820. What is the way to achieve rounding half to even?