File Methods

readable()

Return True if the file stream can be read from.

file.readable()

file.readable() checks whether the file object was opened in a readable mode (such as 'r', 'r+', 'w+', 'a+').

Returns

True if readable; otherwise False.

Try it

Run it and change it

import tempfile
with tempfile.NamedTemporaryFile(mode='w', delete=True) as f:
    print('Write-only readable:', f.readable())
with tempfile.NamedTemporaryFile(mode='r', delete=True) as f:
    print('Read-only readable:', f.readable())

Worth knowing

Mode validation: Attempting to call read() on a non-readable stream raises an io.UnsupportedOperation error.

Related entries

writable()seekable()open()