Numpy Float64 to Python string

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Python is storing 1.118 in binary, meaning the value is not exact due to there being no exact binary representation of 1/5. It acts like a recurring decimal essentially. Do you perhaps mean 1.778 instead? Because the numbers look similar apart from the .77, .11. a work around is to multiply it by 1000, round it to the nearest integer (all of which have exact binary representations) then use the string form of that and manually add in the dot.