Option for not adding spaces around binary operators

[sglyon]

Sometimes in the scientific code I write it helps readability if I can group chunks of an equation together by not adding spaces around all binary operators (*, +, -, \, **).

Is there a way to tell yapf not to add spaces around these operators?

[bwendling]

There's no option for doing that at the moment. It might be relatively easy to add it though.

[hayd]

Usually you don't want spaces around **, but most likely the heuristic would only remove spaces if there were multiple operators in the same line - to make precedence clearer.

a*b
a * b

a * b + c
a*b + c

a ** b + c
a**b + c

potentially you even want parenthesis to make it clearer still:

a * b + a * b * c + d ** a * b
a*b + a*b*c + (d**a * b)

See pep8 suggestions about this:

Yes:

i = i + 1
submitted += 1
x = x*2 - 1
hypot2 = x*x + y*y
c = (a+b) * (a-b)

No:

i=i+1
submitted +=1
x = x * 2 - 1
hypot2 = x * x + y * y
c = (a + b) * (a - b)

The latter is a bit of a strange one IMO.

[bwendling]

Ah yes, one of the PEPs that I don't like. :-) I can work on it soon-ish.

[edwinksl]

Any updates on this besides using #yapf: disable?

[bwendling]

I haven't had too much time to work on it lately. disable may be the best bet in such cases. (Or a PR if you're inclined.)