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1 .. highlightlang:: c |
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2 |
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3 .. _boolobjects: |
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4 |
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5 Boolean Objects |
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6 --------------- |
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7 |
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8 Booleans in Python are implemented as a subclass of integers. There are only |
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9 two booleans, :const:`Py_False` and :const:`Py_True`. As such, the normal |
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10 creation and deletion functions don't apply to booleans. The following macros |
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11 are available, however. |
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12 |
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13 |
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14 .. cfunction:: int PyBool_Check(PyObject *o) |
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15 |
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16 Return true if *o* is of type :cdata:`PyBool_Type`. |
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17 |
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18 .. versionadded:: 2.3 |
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19 |
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20 |
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21 .. cvar:: PyObject* Py_False |
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22 |
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23 The Python ``False`` object. This object has no methods. It needs to be |
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24 treated just like any other object with respect to reference counts. |
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25 |
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26 |
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27 .. cvar:: PyObject* Py_True |
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28 |
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29 The Python ``True`` object. This object has no methods. It needs to be treated |
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30 just like any other object with respect to reference counts. |
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31 |
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32 |
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33 .. cmacro:: Py_RETURN_FALSE |
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34 |
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35 Return :const:`Py_False` from a function, properly incrementing its reference |
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36 count. |
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37 |
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38 .. versionadded:: 2.4 |
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39 |
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40 |
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41 .. cmacro:: Py_RETURN_TRUE |
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42 |
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43 Return :const:`Py_True` from a function, properly incrementing its reference |
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44 count. |
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45 |
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46 .. versionadded:: 2.4 |
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47 |
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48 |
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49 .. cfunction:: PyObject* PyBool_FromLong(long v) |
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50 |
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51 Return a new reference to :const:`Py_True` or :const:`Py_False` depending on the |
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52 truth value of *v*. |
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53 |
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54 .. versionadded:: 2.3 |