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Express numbers in scientific notation.

Project description

This package expresses numbers in scientific notation, in formatted strings. It’s intended use to to make computational results easily readable, especially when using a REPL like IPython.

Python 2 is unsupported, due to unicode handling.

Example use. Run scinot.start() to override default print and REPL output:


>> 341283875012.238

import scinot


>> 3.413 x 10 11

Call scinot.end() to return to remove scinot’s parsing:



>> 341283875012.238

You can specify the number of significant figures to display with start, and how long the number must be to invoke scientific notation. It defaults to 4 significant figures, and order-of-magnitude 4:

scinot.start(sigfigs=2, thresh=3)

>> 15


>> 1.5 x 10 2

Call scinot.parse() to return a string in scientific notation:


>> ‘3.413 x 10 11

You can also specify the number of significant figures to display; it defaults to 3.

scinot.parse(-.00000409348, 2)

>> ‘-4.1 x 10 -6

Call scinot.disp(), instead of scinot.parse() to print the result directly, rather than returning a string. parse and disp both take two arguments: The number, and optionally, the amount of significant figures.

If you’re running Python in a Windows terminal and see squares instead of exponents, try a different font, like Source Code Pro.

I’ve built this module with my own use-case in mind, and have likely overlooked features that would extend and improve functionality. If you have an idea, please contact me, or submit a pull request.

Project details

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