Positional argument decompiles as tuple.

This is for python version 3.10

Actual code:
```
faccy = 0.0001

def feq(a, b, t = faccy):
    return abs(a - b) <= t
```
Decompiled Code:
```
faccy = 0.0001

def feq(a, b, t = (faccy,)):
    return abs(a - b) <= t
```