# Generate a list of integer excluding -1, 1 and 0.

In python, I made this code to pick numbers from a list of numbers, excluding -1, 0 and 1. I can't find the equivalent in sage.

```
def alea(n, max):
complete_list = [i for i in range(-max, max+1, 1) if i != 0 and i != -1 and i != 1]
list = random.sample(complete_list, n)
return(list)
```

With Sage, I've done this :

```
sage: def alea(n, max):
....: list = [randrange(-max, max+1) for i in range(n)]
....: return list
....:
sage: a = alea(5,10)
sage: a
[1, 3, 8, -9, 7]
```

and as you can see, 1 is in the list of course.

My goal will then be to take for example 4 random numbers a, b, c and d, to make a sum of fractions a/b+c/d, and to generate the answer automatically to make a series of exercises in a document written with latex/sagetex. That's why I need to exclude -1, 0 and 1.

Thanks in advance for your help .

**edit** :

under sage (jupyter) I have this error

```
---------------------------------------------------------------------------
AttributeError Traceback (most recent call last)
<ipython-input-17-8b055ece5ba6> in <module>
3 list = random.sample(complete_list, n)
4 return(list)
----> 5 a = alea(Integer(5), Integer(10))
6 a
<ipython-input-17-8b055ece5ba6> in alea(n, max)
1 def alea(n, max):
2 complete_list = [i for i in range(-max, max+Integer(1), Integer(1)) if i != Integer(0) and i != -Integer(1) and i != Integer(1)]
----> 3 list = random.sample(complete_list, n)
4 return(list)
5 a = alea(Integer(5), Integer(10))
AttributeError: 'function' object has no attribute 'sample'
```

Why do you need an equivalent and what kind? Your Python code should work fine in Sage as is.

I have an error under Sage, as I show in the "edit" part, and I have some difficulties to understand.

You need to add

`import random`

before calling`random.sample`

Of course ... thanks ... it was so simple. I forgot this.