
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:
Alright, let's start by running the function with a few initial inputs. 

COMMAND: PYTHON(./temp/function.py "hello" "world" "test")
user:
Response: Function input - output pairs: (hello, uvnnl) (world, glwnq) (test, svas) 

assistant:
Interesting, let's try a few more inputs to understand the function better.

COMMAND: PYTHON(./temp/function.py "a" "z" "A" "Z" "123" "abc" "xyz")
user:
Response: Function input - output pairs: (a, e) (z, j) (A, e) (Z, j) (123, 123) (abc, ehf) (xyz, ycj) 

assistant:
Based on the given input-output pairs, I can see a pattern. It seems the function adds 4 to the ASCII value of each character. Let's try a few more inputs to confirm.

COMMAND: PYTHON(./temp/function.py "Python" "Assistant" "CaKe" "!?*+")
user:
Response: Function input - output pairs: (Python, icsult) (Assistant, eaadasets) (CaKe, fekv) (!?*+, !?*+) 

assistant:
[DESCRIPTION]: The function f(x) adds 4 to the ASCII value of each alphabetical character in the input string. For non-alphabetic characters, the function doesn't change their value.

[CODE]: 
```python
def f_approx(x):
    result = ""
    for char in x:
        if char.isalpha():
            result += chr(((ord(char) - 65 + 4) % 26) + 65) if char.isupper() else chr(((ord(char) - 97 + 4) % 26) + 97)
        else:
            result += char
    return result
```