![]() This function doesn't simplify the fraction, but you can do additional processing to reduce it: > n = 0. I will note that this kind of fraction precision is not optimized and will usually not be needed, but for completeness it is here. Our calculator includes a repeating decimals. (8857097, 10000000) # mathematically correct Quickly convert decimals to fractions or mixed number fractions and see the steps behind the calculation. Original Response def float_to_ratio(flt): On this page, you can convert decimal number into equivalent fractional number in reduced form. > Fraction(str(f))Ĭasting as to a string also allows for accurate Decimal instances > Decimal(f).as_integer_ratio() Our online tools will provide quick answers to your calculation and conversion needs. I found a much simpler way to resolve the accuracy issue. Use repeating decimal calculator to construct a fraction. The mathematical result desired was 8857097/10000000 which can be achieved by casting to a string and then manipulating it. Recurring/repeating decimals to fractions calculator converts recurring decimals into fractions. (1994440937439217, 2251799813685248) # mathematically wrongįraction(1994440937439217, 2251799813685248) # same result but in a classįraction(871913, 984423) # still imprecise Convert Decimal to Fraction To convert a decimal into a fraction, we need to first write the given decimal in the form of a fraction, by adding a denominator 1. To expand upon Martijn Pieters excellent answer with an additional option due to the imprecision inherent with more complex floats. take the integer ratio tuple and pass that in as two separate arguments.Īnd a small demo with your sample values: > for f in (0.25, 0.5, 1.25, 3.0):īoth the fractions module and the float.as_integer_ratio() method are new in Python 2.6. Which essentially does the same thing, e.g. Or you can just use the om_float() class method: om_float(0.25) A fraction is a number representing a part of a whole. If you are using Python 2.6 still, then Fraction() doesn't yet support passing in a float directly, but you can combine the two techniques above into: Fraction(*0.25.as_integer_ratio()) Decimals are a type of numbers in mathematics that consist of a whole parts and a fractional part. As you can see, all you are required to do is to add the decimal number. The latter has a very helpful str() conversion: > str(Fraction(0.25))īecause floating point values can be imprecise, you can end up with 'weird' fractions limit the denominator to 'simplify' the fraction somewhat, with Fraction.limit_denominator(): > Fraction(0.185)įraction(3332663724254167, 18014398509481984) The reality is that our convert decimal to fraction is pretty much self.explanatory. Use the fractions.Fraction() type: > from fractions import Fraction (as of Python 3.6, you can do the same with a decimal.Decimal() object.) Use float.as_integer_ratio(): > (0.25).as_integer_ratio() ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |