Using operator pairs (=+ or =-) that look like reversed single operators (+= or -=) is
confusing. They compile and run but do not produce the same result as their mirrored counterpart.
target = -5
num = 3
target =- num # Noncompliant: target = -3. Is that really what's meant?
target =+ num # Noncompliant: target = 3
This rule raises an issue when =+ or =- are used without any space between the operators and when there is at least one
whitespace after.
Replace the operators with a single one if that is the intention
target = -5
num = 3
target -= num # target = -8
Or fix the spacing to avoid confusion
target = -5
num = 3
target = -num # target = -3
