what mean stack overflow code example

Example 1: what is stack overflow

if stackoverflow = "Wonderland":
  print ("Stackoverflow is the place to go")

Example 2: stack over flow

from PIL import Image
user_path = "/Users/" + getpass.getuser())
for folder, sub_folders, files in os.walk(user_path):
    for f in files:
        if FileName == f:
            print("file found", os.path.join(folder,f))