To check if a directory contains any directory or not, simply check the reverse, ie, if it contains any entry that is not a file using the isfile method.
For example
import os list_dir = os.listdir('.') for f in list_dir: if not os.path.isfile(os.path.join('.', f)): print("Not a file")
You can also use the all built in to check this.
For example
import os list_dir = [os.path.isfile(os.path.join('.', f)) for f in os.listdir('.')] print(all(list_dir))
The all function will return true only if all entries are files in the given directory.