
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 the function with a few different inputs. 

COMMAND: PYTHON(./temp/function.py test1 test2 test3)
user:
Response: Function input - output pairs: (test1, fglf1) (test2, fglf2) (test3, fglf3) 

assistant:
Interesting, let's test the function with some more inputs.

COMMAND: PYTHON(./temp/function.py hello world foobar)
user:
Response: Function input - output pairs: (hello, egddb) (world, jbmdr) (foobar, ibbhxm) 

assistant:
Let's try testing the function with inputs containing upper case letters, digits, and special characters.

COMMAND: PYTHON(./temp/function.py AbC1!2@3# Test$%)
user:
Response: Function input - output pairs: (AbC1!2@3#, xhw1!2@3#) (Test$%, fglf$%) 

assistant:
Based on these results, for each lower case letter in the input, the function seems to increment each character by 4 positions in the alphabet, wrapping around after 'z'. However, it leaves other characters (such as upper case letters, digits, and special characters) unchanged. Let's summarize the results:

[DESCRIPTION]: The function increments each lower case letter in the given input by 4 positions, with wraparound after 'z', while leaving all other characters unchanged.

[CODE]: 
```python
def approximate_function(input_string):
    output = ''
    for char in input_string:
        if char.islower():
            shifted_char = chr(((ord(char) - ord('a') + 4) % 26) + ord('a'))
            output += shifted_char
        else:
            output += char
    return output
```

To confirm our understanding, let's run one more test with a more diverse input.

COMMAND: PYTHON(./temp/function.py aZ1!zZ)