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SF bug #1178269 Clarify when isMappingType/isSequenceType is True.

This commit is contained in:
Raymond Hettinger 2005-04-07 05:36:17 +00:00
parent fb5f04d77f
commit ad351f806d
1 changed files with 5 additions and 3 deletions
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8
Doc/lib/liboperator.tex
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@ -262,7 +262,8 @@ unbound methods, class objects, and instance objects which support the
\begin{funcdesc}{isMappingType}{o}
Returns true if the object \var{o} supports the mapping interface.
This is true for dictionaries and all instance objects.
This is true for dictionaries and all instance objects defining
\method{__getitem__}.
\warning{There is no reliable way to test if an instance
supports the complete mapping protocol since the interface itself is
ill-defined. This makes this test less useful than it otherwise might
@ -271,7 +272,7 @@ be.}
\begin{funcdesc}{isNumberType}{o}
Returns true if the object \var{o} represents a number. This is true
for all numeric types implemented in C, and for all instance objects.
for all numeric types implemented in C.
\warning{There is no reliable way to test if an instance
supports the complete numeric interface since the interface itself is
ill-defined. This makes this test less useful than it otherwise might
@ -281,7 +282,8 @@ be.}
\begin{funcdesc}{isSequenceType}{o}
Returns true if the object \var{o} supports the sequence protocol.
This returns true for all objects which define sequence methods in C,
and for all instance objects. \warning{There is no reliable
and for all instance objects defining \method{__getitem__}.
\warning{There is no reliable
way to test if an instance supports the complete sequence interface
since the interface itself is ill-defined. This makes this test less
useful than it otherwise might be.}