Even with nested functions tabs are neat.

Does you app have too many nested functions?

Use tab width = 2

Do your app have too less nested functions?

Use tab width = 8

Is your app having average number of nested fns?

Use tab width = 4(mostly default)

And all theese can happen without modifying a single byte in the source file, unlike spaces!

Not any standard (and actually not at all something to do for real), but try it, it works

def magic(a, b, c):
    if a > 0:
    	if b > 0:
    	   		if c > 0:
    	   		  return 'All positive'
    
    return 'Not all positive'

print(magic(1,2,3))
print(magic(-1,1,2))
print(magic(1,-1,0))
print(magic(-1,-1,-2))

(you should be able to verify I used both tab and spaces f*cking bad way in this example, like I described)

Output:

All positive
Not all positive
Not all positive
Not all positive


** Process exited - Return Code: 0 **
Press Enter to exit terminal