<human>:  get first file in a folder.
<bot>: Here is a Python program to get the first file in a folder

import os

def get_first_file(path):
  """Get first file in a folder.
  """
  for root, dirs, files in os.walk(path):
    for file in files:
      if file.endswith(".txt"):
        return os.path.join(root, file)

# Enter the path
path = "/Users/rosey/Desktop/"

# Calling the function
print((get_first_file(path)))

#Example Output
# None

#Remember to inspect code for bugs.