Python: Write code with large numbers readable in EDITOR

Question

I can see multiple pages explaining how to format and print numbers in python, but is there a way to write code with large numbers in a readable way?

speed_of_light = 299 792 458       # metres
dist_to_andromeda = 2,537,497      # light years
dia_of_earth_at_eq = 12_756_320    # metres

EDIT: I found the last one working on py36, but what's the solution for those using py35? Isn't there a way other than comments which would be redundant?

may be treat them as string, and convert to numbers on computation? — Yonas Kassa, Jun 16 '17 at 09:04
Possible duplicate of [Digit separators in Python code](https://stackoverflow.com/questions/38155177/digit-separators-in-python-code) — mkrieger1, Jun 16 '17 at 09:07
@yosemite_k I would rather type that as a comment rather than to have the interpreter see it and process the same! — Saravanabalagi Ramachandran, Jun 16 '17 at 09:08
As noted in the duplicate, with python 3.6, use _ (as in your third example); for python < 3.6, you're stuck with less ideal workarounds — Foon, Jun 16 '17 at 10:58

score 2 · Answer 1 · answered Jun 16 '17 at 09:04

2

From Python 3.6 there is

dia_of_earth_at_eq = 12_756_320

Is valid code.

See PEP 515: Underscores in Numeric Literals in What's new in Python 3.6

answered Jun 16 '17 at 09:04

vishes_shell

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i actually tried it! But in 3.5.x... :/ So there's no way other than parsing strings and comments for 3.5? – Saravanabalagi Ramachandran Jun 16 '17 at 09:07
You can use comments `dia_of_earth_at_eq = 12756320 # 12_756_320 metres` for it to be more readable – vishes_shell Jun 16 '17 at 09:09
Looks like there's no cleaner way...! :( – Saravanabalagi Ramachandran Jun 16 '17 at 09:10

Python: Write code with large numbers readable in EDITOR

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