
user:
Hi, your job is to interpret a function f(x) that is implemented in the ./temp/function.py script. f(x) takes string inputs.
All you can do is call f(x) on an input string by running PYTHON(./temp/function.py string). 
Try to describe the function implemented by f(x) by running experiments on it. 
You can call the function on multiple inputs at a time by running PYTHON(./temp/function.py string1 string2 string3 ...). 
We encourage testing a large range of inputs before writing a description.
The goal is to find a good simple description of f(x) that explains most of the function behavior. f(x) may combine multiple different operations.
Your description of the function should be in the following form.
[DESCRIPTION]: Describe what the function is doing in language. 
[CODE]: Write python code that approximates the behavior of the function. 
assistant:
Let's begin by testing the function with some inputs. 
COMMAND: PYTHON(./temp/function.py "test" "hello" "123" "example")
user:
Response: Function input - output pairs: (test, ueau) (hello, hexxi) (123, 123) (example, evpjcxe) 

assistant:
Interesting, let's test with some more inputs:
COMMAND: PYTHON(./temp/function.py "abc" "abcdef" "xyz" "python")
user:
Response: Function input - output pairs: (abc, pzw) (abcdef, pzwfey) (xyz, vsq) (python, csuhim) 

assistant:
Let's test with single-letter and repeating-letter inputs:
COMMAND: PYTHON(./temp/function.py "a" "aa" "x" "xx" "y" "yy" "z" "zz")
user:
Response: Function input - output pairs: (a, p) (aa, pp) (x, v) (xx, vv) (y, s) (yy, ss) (z, q) (zz, qq) 

assistant:
[DESCRIPTION]: The function takes a string input and returns a new string where each character is replaced by the character 15 positions ahead of it in the alphabet, wrapping around if necessary.

[CODE]: 
```python
def approx_function(s):
    result = ""
    for c in s:
        if c.isalpha():
            new_c = chr(((ord(c) - ord('a') + 15) % 26) + ord('a'))
            result += new_c
        else:
            result += c
    return result
```