Mercurial > cpython-lru_cache-weakref
view Python/getcompiler.c @ 64620:25cc226dc9bd
#4617: Previously it was illegal to delete a name from the local
namespace if it occurs as a free variable in a nested block. This limitation
of the compiler has been lifted, and a new opcode introduced (DELETE_DEREF).
This sample was valid in 2.6, but fails to compile in 3.x without this change::
>>> def f():
... def print_error():
... print(e)
... try:
... something
... except Exception as e:
... print_error()
... # implicit "del e" here
This sample has always been invalid in Python, and now works::
>>> def outer(x):
... def inner():
... return x
... inner()
... del x
There is no need to bump the PYC magic number: the new opcode is used
for code that did not compile before.
| author | Amaury Forgeot d'Arc <amauryfa@gmail.com> |
|---|---|
| date | Fri, 10 Sep 2010 21:39:53 +0000 |
| parents | 4306107b1395 |
| children |
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/* Return the compiler identification, if possible. */ #include "Python.h" #ifndef COMPILER #ifdef __GNUC__ #define COMPILER "\n[GCC " __VERSION__ "]" #endif #endif /* !COMPILER */ #ifndef COMPILER #ifdef __cplusplus #define COMPILER "[C++]" #else #define COMPILER "[C]" #endif #endif /* !COMPILER */ const char * Py_GetCompiler(void) { return COMPILER; }