Python Decimal - engineering notation for mili (10e-3) and micro (10e-6)

Question

Here is the example which is bothering me:

>>> x = decimal.Decimal(\'0.0001\')
>>> print x.normalize()
>>> print x.normalize().to_         


        

Answer 1

I realize that this is an old thread, but it does come near the top of a search for python engineering notation and it seems prudent to have this information located here.

I am an engineer who likes the "engineering 101" engineering units. I don't even like designations such as 0.1uF, I want that to read 100nF. I played with the Decimal class and didn't really like its behavior over the range of possible values, so I rolled a package called engineering_notation that is pip-installable.

pip install engineering_notation

From within Python:

>>> from engineering_notation import EngNumber
>>> EngNumber('1000000')
1M
>>> EngNumber(1000000)
1M
>>> EngNumber(1000000.0)
1M
>>> EngNumber('0.1u')
100n
>>> EngNumber('1000m')
1

This package also supports comparisons and other simple numerical operations.

https://github.com/slightlynybbled/engineering_notation