if-return 语句

if(A > B):
    return A+1
return A-1

or

if(A > B):
    return A+1
else:
    return A-1

++++++++++++++++++++++++++++++++++++++++++

1# Bad
if (foo)
  return 1
else
  return 2

2# Good
if (foo)
  return 1
return 2

3# Good

return 1 if foo else 2