Convert Float value to two point decimal

Question

I need to find the way for converting the Float value in to the two point decimal.

I have a API code which is implemented already which will be returning the two Float value.

For example consider it is returning the values as follows: 293.019999504

But I need to make it as 293.01 instead of 293.019999504

As well as it should be handling 0 as 0.00

I am unable to modify the API implementation backend or DB tables.

I need to implement this in views.py where I am getting the values using the API calls.

Need a way to achieve this in pythonic way.

1) Are you receiving these values as floats or as strings? 2) Why do you want 293.01 rather than 293.02? — PM 2Ring, May 11 '16 at 12:04

score 3 · Answer 1 · answered May 11 '16 at 11:36

3

You should do as follows:

a = 293.019999504
print("{0:.2f}".format(a))
>> 293.02

answered May 11 '16 at 11:36

mvelay

score 0 · Answer 2 · answered May 11 '16 at 11:36

0

IIUC you want to use the round function:

round(293.019999504,2)
Out[1]:
293.02

Note that it will round your number (so 293.019 will end up as 293.02), if you don't want that, you can use floor:

from math import floor
floor(100*293.019999504)/100

answered May 11 '16 at 11:36

ysearka

score 0 · Answer 3 · answered May 11 '16 at 11:47

If you really want to round down, you need something like

    int(293.019999504 * 100) / 100.0

However, the correct way of dealing with accounting matters is fixed point calculations as described here: https://docs.python.org/2/library/decimal.html.

3 Answers3