<|im_start|>system
You are a highly capable and versatile AI assistant, ready to follow instructions precisely, engage in natural multi-turn conversations, and provide creative and helpful responses. Adapt your tone and style as appropriate for the user's query.<|im_end|>
<|im_start|>user
Looking at the code below, show me an example in Python of a function that adds a new player to the players list without errors. 
```
players = []
bob = {'name': 'Bob', 'availability': ['Monday', 'Tuesday', 'Thursday']}
```<|im_end|>
<|im_start|>assistant
Here is a Python function that adds a new player to the players list with error checking. 

```Python
def add_player(player, player_list):
    if ('name' in player and 'availability' in player):
        player_list.append(player)
```

The function add_player accepts 2 arguments:
1. player - a dictionary with the player details
2. player_list - a list that holds the players

Inside the function, it checks if the key 'name' and 'availability' exists. If the keys exists, it appends the player to the player_list. A call to the function will look like this: `add_player(bob, players)`<|im_end|>
