file

**file**(filename[, mode[, bufsize]])

The type used for file objects (see [[type-file]]).

The [[file]] constructor is new in Python 2.2 and is an alias for
[[open]]. Both spellings are equivalent. The intent is for [[open]] to
continue to be preferred for use as a factory function which returns a
new file object. The spelling, file is more suited to type testing
(for example, writing "isinstance(f, file)").