I continually receive the message "Oops, try again. Your function fails on is_int(-2). It returns False when it should return True." -- I figured that my absolute value reference would solve for negative integers but that does not seem to be the case!

```
def is_int(x):
if abs(x) == int:
return True
elif abs(x) == str(x) + "." + "0":
return True
else:
return False
```