Print number in engineering format

Question

I am trying to print a number into engineering format with python, but I cannot seem to get it to work. The syntax SEEMS simple enough, but it just doesn\'t work.

Answer 1

QuantiPhy is another package that can help you with this. QuantiPhy provides the Quantity class that is used to combine a value and units into one object. It can format the quantity in a variety of ways. Generally people use SI scale factors, but engineering form is also supported. Install with:

pip3 install quantiphy

You can create a Quantity object starting from a number or a string:

>>> from quantiphy import Quantity
>>> q = Quantity(10000000)
>>> q.render(form='eng')
'10e6'

By default QuantiPhy uses SI notation, but you can set the default form to 'eng':

>>> print(q)
10M
>>> Quantity.set_prefs(form='eng')
>>> print(q)
10e6

Normally you would specify units to a quantity:

>>> f = Quantity(10_000_000, 'Hz')
>>> print(f)
10e6 Hz

Quantity subclasses float, so you can use a quantity anywhere you would use a float.

QuantiPhy is a powerful package that is well supported and well documented. I encourage you to give it a try.