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| -rw-r--r-- | Doc/lib/libfuncs.tex | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/Doc/lib/libfuncs.tex b/Doc/lib/libfuncs.tex index 95ca9eb..6b853f3 100644 --- a/Doc/lib/libfuncs.tex +++ b/Doc/lib/libfuncs.tex @@ -416,9 +416,12 @@ class C: after any I/O has been performed, and there's no reliable way to determine whether this is the case.} - The \function{file()} constructor is new in Python 2.2. The previous - spelling, \function{open()}, is retained for compatibility, and is an - alias for \function{file()}. + The \function{file()} constructor is new in Python 2.2 and is an + alias for \function{open()}. Both spellings are equivalent. The + intent is for \function{open()} to continue to be preferred for use + as a factory function which returns a new \class{file} object. The + spelling, \class{file} is more suited to type testing (for example, + writing \samp{isinstance(f, file)}). \end{funcdesc} \begin{funcdesc}{filter}{function, list} |