# How set and especially clear bits?

I try

```
n.set_bit(7)
```

No set_bit, clear_bit methods for n. Next I try clear by bit mask

```
x = 14
n = 1
mask = ~(1 << n)
```

but ~ means in sage 1/x

Is good solution using subtraction? Fore example 2^256 - 1 - 2^32