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Add the 'bool' type and its values 'False' and 'True', as described in

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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.
This commit is contained in:
Guido van Rossum 2002-04-03 22:41:51 +00:00
parent e9c0358bf4
commit 77f6a65eb0
29 changed files with 489 additions and 378 deletions
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20
Modules/operator.c
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@ -102,7 +102,7 @@ used for special class methods; variants without leading and trailing\n\
PyObject *a1; long r; \
if(! PyArg_ParseTuple(a,"O:" #OP,&a1)) return NULL; \
if(-1 == (r=AOP(a1))) return NULL; \
return PyInt_FromLong(r); }
return PyBool_FromLong(r); }
#define spami2(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
PyObject *a1, *a2; long r; \
@ -110,6 +110,12 @@ used for special class methods; variants without leading and trailing\n\
if(-1 == (r=AOP(a1,a2))) return NULL; \
return PyInt_FromLong(r); }
#define spami2b(OP,AOP) static PyObject *OP(PyObject *s, PyObject *a) { \
PyObject *a1, *a2; long r; \
if(! PyArg_ParseTuple(a,"OO:" #OP,&a1,&a2)) return NULL; \
if(-1 == (r=AOP(a1,a2))) return NULL; \
return PyBool_FromLong(r); }
#define spamrc(OP,A) static PyObject *OP(PyObject *s, PyObject *a) { \
PyObject *a1, *a2; \
if(! PyArg_ParseTuple(a,"OO:" #OP,&a1,&a2)) return NULL; \
@ -139,8 +145,8 @@ spam2(op_or_ , PyNumber_Or)
spami(isSequenceType , PySequence_Check)
spam2(op_concat , PySequence_Concat)
spamoi(op_repeat , PySequence_Repeat)
spami2(op_contains , PySequence_Contains)
spami2(sequenceIncludes, PySequence_Contains)
spami2b(op_contains , PySequence_Contains)
spami2b(sequenceIncludes, PySequence_Contains)
spami2(indexOf , PySequence_Index)
spami2(countOf , PySequence_Count)
spami(isMappingType , PyMapping_Check)
@ -208,11 +214,11 @@ static struct PyMethodDef operator_methods[] = {
spam1(isCallable,
"isCallable(a) -- Same as callable(a).")
spam1(isNumberType,
"isNumberType(a) -- Return 1 if a has a numeric type, and zero otherwise.")
"isNumberType(a) -- Return True if a has a numeric type, False otherwise.")
spam1(isSequenceType,
"isSequenceType(a) -- Return 1 if a has a sequence type, and zero otherwise.")
"isSequenceType(a) -- Return True if a has a sequence type, False otherwise.")
spam1(truth,
"truth(a) -- Return 1 if a is true, and 0 otherwise.")
"truth(a) -- Return True if a is true, False otherwise.")
spam2(contains,__contains__,
"contains(a, b) -- Same as b in a (note reversed operands).")
spam1(sequenceIncludes,
@ -222,7 +228,7 @@ spam1(indexOf,
spam1(countOf,
"countOf(a, b) -- Return the number of times b occurs in a.")
spam1(isMappingType,
"isMappingType(a) -- Return 1 if a has a mapping type, and zero otherwise.")
"isMappingType(a) -- Return True if a has a mapping type, False otherwise.")
spam2(add,__add__, "add(a, b) -- Same as a + b.")
spam2(sub,__sub__, "sub(a, b) -- Same as a - b.")