Conditional with statement with multiple variables in python [duplicate]

I would like to accept a certain number (limited to - say, 3) to evaluate a condition within the a with statement. I did find it's possible to do something like this. Can I do something similar to the following in the with statement by evaluating a condition:

def foo(num):
    with open("1.txt","a") as f1, open("2.txt") as f2 <<if num >= 2>>, open("3.txt") as f3 <<if num >= 3>>:
        if num >= 1:
            f1.write("1")
            if num >= 2:
                f2.write("2")
                if num >= 3:
                    f3.write("3")

Is this possible? Is there any other way I can evaluate an if condition for the objects involved in a with statement so that I use exactly the same number of objects as in num?

P.S. : This code above is just an example using files, it can be replaced by objects too.