整数下限至最接近的10,000

Question

If possible can anyone advise the best way to get the floor of an integer eg 388,000 should always return the floor of 380,000.

Thats to say the floor should always be rounded down to 10,000.

I saw math.floor(300.16):

Result:

300.0

However this function only applies the floor to the decimal places.

All help is greatly appreciated

Thanks

Answer 1

you can first subtract 5000 from your number and then round to 4 place before the decimal points:

round(388000-5000, -4)
380000

round(383000-5000, -4)
380000

Or to use floor function with a trick:

math.floor(388000/10000)*10000
380000

Answer 2

I would divide the given integer by 10,000.0 (with type cast to float), then floor and then multiply by 10.000 (with type cast to integer). Should do the job.

Maybe your language cuts the decimals when you divide integers, than you may spare the casting and flooring and just divide and multiply.

Answer 3

I'm assuming you want to perform this operation on a pandas series, given this question is tagged with pandas .

UPDATED: Thanks to GZ0

s = s // 10000 * 10000