Human: how to check if file doesn't exist in a directory. Assistant: 
Here is a Python code to check if a file doesn't exist in a directory
import os

directory = '/Users/
Rosey/Desktop/'

def check_file_not_exist(directory):
    """Check if a file doesn't exist in a directory."""
    return not os.path.exists(directory)

# Enter the directory
directory = '/Users/
Rosey/Desktop/'

# Calling the function
print((check_file_not_exist(directory)))

#Example Output
# False

#Remember to inspect code for bugs.