Python Convert String to Float without Scientific Notation-CodePudding

I have some code to convert string to float:

n = float('9400108205499941468492')

My unittest throws exceptions:

self.assertEqual(9400108205499941468492, n)

Expected :9400108205499941468492
Actual   :9.400108205499941e 21

What should I do to disable scientific notation in float().

CodePudding user response：

you can use int() instead of float and when you add 0.5 or any other float then if you want the approximate value then you use int

CodePudding user response：

As Josh Friedlander mentions you are comparing an int to a float which will always be invalid.

In order to represent a float without scientific notation you can use Decimal but this is also not going to make your comparison to an int valid...

>>> from decimal import Decimal
>>> n = float('9400108205499941468492')
>>> format(Decimal.from_float(n))
'9400108205499941388288'
>>> y = format(Decimal.from_float(n))
>>> type(y)
<class 'str'>