Genuine decimal numbers

try this....

import decimal

decimal.Number(1) == decimal.Number(1.0)

one = decimal.Number(1)

two = decimal.Number(2)

eleven = decimal.Number(11)

pi = decimal.Number(3.1415)

minus_one = decimal.Number(-1)

print(decimal.add(one, two))

print(decimal.subtract(one, two))

print(decimal.multiply(eleven, two))

print(decimal.divide(one, eleven, 15))

print(decimal.absolute(minus_one))

print(decimal.integer(pi))

print(decimal.fraction(pi))

print(decimal.round(pi, 3))

# the correct way to express a = b

new_number = decimal.copy(one)

print(new_number)

I mean, what is the output? Can you demonstrate the error without using the library, versus with using the library?

I was hoping, something like this (this isn't a real example, this is just to provide a rough idea of what I mean):

Without decimal-numbers library:

>>100 / 3

>> 33.330

With decimal-numbers library:

>>print(decimal.divide(decimal.integer(100), decimal.integer(3))

>> 33.3333333333

Also, are you using micropython with single-precision, or micropython with double-precision? I have not used micro:bit in a very long time, so I am not sure what it has by default (the micropython firmware is built for single or double precision, I just don't know which of the two the micro:bit firmware image is built to).

I mean, what is the output? Can you demonstrate the error without using the library, versus with using the library?

I was hoping, something like this (this isn't a real example, this is just to provide a rough idea of what I mean):

Without decimal-numbers library:

>>100 / 3

>> 33.330

With decimal-numbers library:

>>print(decimal.divide(decimal.integer(100), decimal.integer(3))

>> 33.3333333333

Also, are you using micropython with single-precision, or micropython with double-precision? I have not used micro:bit in a very long time, so I am not sure what it has by default (the micropython firmware is built for single or double precision, I just don't know which of the two the micro:bit firmware image is built to).

On python 3 decimal.Number (0.115) != decimal.Number ("0.115") but on microbit they are the same.

It is only for version 2 microbit''s version 1 have a code limit of about 8kb

With the decimal numbers library try

decimal.divide(decimal.Number(100), decimal.Number(3), 1000)

The result will be 33.3333.....

A much greater precision than both python 3 and the 32 bit floats that are implemented in microbit micropython.

See examples of it in use in decimal_math.py and pi.py or for microbiology it's microbit_root.py and microbit_pi.py