
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 some simple string inputs to understand its behavior.

COMMAND: PYTHON(./temp/function.py "test" "hello" "world")
user:
Response: Function input - output pairs: (test, testTtCU) (hello, helloTtCU) (world, worldTtCU) 

assistant:
Let's try some more string inputs to further examine the function's behavior.

COMMAND: PYTHON(./temp/function.py "apple" "12345" "random")
user:
Response: Function input - output pairs: (apple, appleTtCU) (12345, 12345TtCU) (random, randomTtCU) 

assistant:
Based on the given input-output pairs so far, the function seems to be appending the string "TtCU" to the input string. Let's do additional tests to validate this observation.

COMMAND: PYTHON(./temp/function.py "empty" "example" "anothertest")
user:
Response: Function input - output pairs: (empty, emptyTtCU) (example, exampleTtCU) (anothertest, anothertestTtCU) 

assistant:
Based on the responses provided, I can confidently describe the function behavior as follows:

[DESCRIPTION]: The function appends the string "TtCU" to the end of the input string.

[CODE]:
```python
def function_approximation(input_string):
    return input_string + "TtCU"
```