Python 3.3+Exceptionsexception

NotADirectoryError

built-in exceptions

An operation expected a directory but got a non-directory (a subclass of OSError).

Syntax

raise NotADirectoryError

It shows up when a path that has to be a directory turns out to be a file: os.listdir('data.txt'), os.scandir on a file, or opening 'data.txt/inner.txt' where an intermediate component is a regular file. Check Path.is_dir() before the operation, and prefer catching the broader OSError, because the same situation can surface as a different subclass on another OS (FileNotFoundError, for instance).

Examples

try:
    raise NotADirectoryError
except NotADirectoryError as e:
    print(type(e).__name__)   # → NotADirectoryError

See also

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