
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 testing some simple inputs to see how the function behaves. 

COMMAND: PYTHON(./temp/function.py "a" "b" "c")
user:
Response: Function input - output pairs: (a, Q) (b, R) (c, S) 

assistant:
Interesting, it seems to be mapping characters to other characters. Let's try a few more inputs to understand its behavior better. 

COMMAND: PYTHON(./temp/function.py "d" "e" "f" "g" "h" "i" "j" "k" "l" "m" "n" "o" "p" "q" "r" "s" "t" "u" "v" "w" "x" "y" "z")
user:
Response: Function input - output pairs: (d, T) (e, U) (f, V) (g, W) (h, X) (i, Y) (j, Z) (k, [) (l, \) (m, ]) (n, ^) (o, _) (p, `) (q, a) (r, b) (s, c) (t, d) (u, e) (v, f) (w, g) (x, h) (y, i) (z, z) 

assistant:
Based on these input-output pairs, it appears that the function is shifting the input character by some fixed amount in the alphabet. In this case, it appears to be a Caesar cipher with a shift of 16.

[DESCRIPTION]: The function f(x) implements a Caesar cipher with a forward shift of 16.

[CODE]: 
```python
def caesar_cipher(input_string, shift):
    output_string = ""
    
    for char in input_string:
        if char.isalpha():
            is_upper = char.isupper()
            char = chr((((ord(char) - 65) + shift) % 26) + 65)
            if is_upper:
                output_string += char.upper()
            else: 
                output_string += char.lower()
        else: 
            output_string += char
            
    return output_string

input_string = "a"
shift = 16
print(caesar_cipher(input_string, shift))
```
Try this code to approximate the function's behavior.