代码对象 ¶

Code objects are a low-level detail of the CPython implementation. Each one represents a chunk of executable code that hasn’t yet been bound into a function.

type PyCodeObject ¶

The C structure of the objects used to describe code objects. The fields of this type are subject to change at any time.

PyTypeObject PyCode_Type ¶

This is an instance of PyTypeObject representing the Python code 类型。

int PyCode_Check ( PyObject * co ) ¶

返回 True 若 co 是 code object. This function always succeeds.

int PyCode_GetNumFree ( PyCodeObject * co ) ¶

Return the number of free variables in co .

PyCodeObject * PyCode_New ( int argcount , int kwonlyargcount , int nlocals , int stacksize , int flags , PyObject * code , PyObject * consts , PyObject * 名称 , PyObject * varnames , PyObject * freevars , PyObject * cellvars , PyObject * filename , PyObject * name , int firstlineno , PyObject * linetable , PyObject * exceptiontable ) ¶

返回值：新引用。

Return a new code object. If you need a dummy code object to create a frame, use PyCode_NewEmpty() instead. Calling PyCode_New() directly will bind you to a precise Python version since the definition of the bytecode changes often. The many arguments of this function are inter-dependent in complex ways, meaning that subtle changes to values are likely to result in incorrect execution or VM crashes. Use this function only with extreme care.

3.11 版改变： 添加 exceptiontable 参数。

PyCodeObject * PyCode_NewWithPosOnlyArgs ( int argcount , int posonlyargcount , int kwonlyargcount , int nlocals , int stacksize , int flags , PyObject * code , PyObject * consts , PyObject * 名称 , PyObject * varnames , PyObject * freevars , PyObject * cellvars , PyObject * filename , PyObject * name , int firstlineno , PyObject * linetable , PyObject * exceptiontable ) ¶

返回值：新引用。

类似于 PyCode_New() , but with an extra “posonlyargcount” for positional-only arguments. The same caveats that apply to PyCode_New also apply to this function.

3.8 版新增。

3.11 版改变： 添加 exceptiontable 参数。

PyCodeObject * PyCode_NewEmpty ( const char * filename , const char * funcname , int firstlineno ) ¶

返回值：新引用。

Return a new empty code object with the specified filename, function name, and first line number. The resulting code object will raise an Exception if executed.

int PyCode_Addr2Line ( PyCodeObject * co , int byte_offset ) ¶

Return the line number of the instruction that occurs on or before byte_offset and ends after it. If you just need the line number of a frame, use PyFrame_GetLineNumber() 代替。

For efficiently iterating over the line numbers in a code object, use the API described in PEP 626 .

int PyCode_Addr2Location ( PyObject * co , int byte_offset , int * start_line , int * start_column , int * end_line , int * end_column ) ¶

Sets the passed int pointers to the source code line and column numbers for the instruction at byte_offset . Sets the value to 0 when information is not available for any particular element.

返回 1 if the function succeeds and 0 otherwise.

PyObject * PyCode_GetCode ( PyCodeObject * co ) ¶

Equivalent to the Python code getattr(co, 'co_code') . Returns a strong reference to a PyBytesObject representing the bytecode in a code object. On error, NULL is returned and an exception is raised.

This PyBytesObject may be created on-demand by the interpreter and does not necessarily represent the bytecode actually executed by CPython. The primary use case for this function is debuggers and profilers.

3.11 版新增。

PyObject * PyCode_GetVarnames ( PyCodeObject * co ) ¶

Equivalent to the Python code getattr(co, 'co_varnames') . Returns a new reference to a PyTupleObject containing the names of the local variables. On error, NULL is returned and an exception is raised.

3.11 版新增。

PyObject * PyCode_GetCellvars ( PyCodeObject * co ) ¶

Equivalent to the Python code getattr(co, 'co_cellvars') . Returns a new reference to a PyTupleObject containing the names of the local variables that are referenced by nested functions. On error, NULL is returned and an exception is raised.

3.11 版新增。

PyObject * PyCode_GetFreevars ( PyCodeObject * co ) ¶

Equivalent to the Python code getattr(co, 'co_freevars') . Returns a new reference to a PyTupleObject containing the names of the free variables. On error, NULL is returned and an exception is raised.

3.11 版新增。

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