# Using boolean opeation between 2 arrays in python

I have two arrays, lets say:

```a = np.array([1,2,3,4,5,6,7])
b = np.array([1,2,10,18,3,4,7])
```

Now I would like to apply a double condition, 2<a<6 and 2<b<6. Now how can I get those objects of a and b for which 2<a<6 and 2<b<6 ?

I tried

```condition_a = a[(a>2)*(a<6)]
condition_b = b[(b>2)*(b<6)]

new_a = a[(condition_a) and (condition_b)]
new_b = b[(condition_a) and (condition_b)]
```

But it doesn't work!!

## Answers

```mask = (a>2) & (a<6) & (b>2) & (b<6)
new_a = a[mask]
new_b = b[mask]
```

Using & given the same result as *, but since we are performing a logical_and here, I think it is clearer to use &.

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