Mercurial > cpython-lru_cache-weakref
diff Doc/lib/libfuncs.tex @ 22785:aa8d59823add legacy-trunk
Add the 'bool' type and its values 'False' and 'True', as described in
PEP 285. Everything described in the PEP is here, and there is even
some documentation. I had to fix 12 unit tests; all but one of these
were printing Boolean outcomes that changed from 0/1 to False/True.
(The exception is test_unicode.py, which did a type(x) == type(y)
style comparison. I could've fixed that with a single line using
issubtype(x, type(y)), but instead chose to be explicit about those
places where a bool is expected.
Still to do: perhaps more documentation; change standard library
modules to return False/True from predicates.
| author | Guido van Rossum <guido@python.org> |
|---|---|
| date | Wed, 03 Apr 2002 22:41:51 +0000 |
| parents | a53730cd29c1 |
| children | 7b00dab988cf |
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--- a/Doc/lib/libfuncs.tex Wed Apr 03 21:52:10 2002 +0000 +++ b/Doc/lib/libfuncs.tex Wed Apr 03 22:41:51 2002 +0000 @@ -77,6 +77,16 @@ to \code{\var{function}(*\var{args}, **\var{keywords})}. \end{funcdesc} +\begin{funcdesc}{bool}{x} + Convert a value to a Boolean, using the standard truth testing + procedure. If \code{x} is false, this returns \code{False}; + otherwise it returns \code{True}. \code{bool} is also a class, + which is a subclass of \code{int}. Class \code{bool} cannot be + subclassed further. Its only instances are \code{False} and + \code{True}. +\indexii{Boolean}{type} +\end{funcdesc} + \begin{funcdesc}{buffer}{object\optional{, offset\optional{, size}}} The \var{object} argument must be an object that supports the buffer call interface (such as strings, arrays, and buffers). A new buffer