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authorGuido van Rossum <guido@python.org>2001-08-08 05:00:18 +0000
committerGuido van Rossum <guido@python.org>2001-08-08 05:00:18 +0000
commita87e6ef59e177409e25b09a3d1f25acc6bf0c14f (patch)
treedf74b5a7b92885e46feda829273f0985672da1a6 /Python/future.c
parentcb9ea39487839f95b0d453d22d7302e41373c2a4 (diff)
downloadcpython-a87e6ef59e177409e25b09a3d1f25acc6bf0c14f.tar.gz
Implement PEP 238 in its (almost) full glory.
This introduces: - A new operator // that means floor division (the kind of division where 1/2 is 0). - The "future division" statement ("from __future__ import division) which changes the meaning of the / operator to implement "true division" (where 1/2 is 0.5). - New overloadable operators __truediv__ and __floordiv__. - New slots in the PyNumberMethods struct for true and floor division, new abstract APIs for them, new opcodes, and so on. I emphasize that without the future division statement, the semantics of / will remain unchanged until Python 3.0. Not yet implemented are warnings (default off) when / is used with int or long arguments. This has been on display since 7/31 as SF patch #443474. Flames to /dev/null.
Diffstat (limited to 'Python/future.c')
-rw-r--r--Python/future.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/Python/future.c b/Python/future.c
index fc0d7482c9..db62b5b251 100644
--- a/Python/future.c
+++ b/Python/future.c
@@ -33,6 +33,8 @@ future_check_features(PyFutureFeatures *ff, node *n, char *filename)
ff->ff_nested_scopes = 1;
} else if (strcmp(feature, FUTURE_GENERATORS) == 0) {
ff->ff_generators = 1;
+ } else if (strcmp(feature, FUTURE_DIVISION) == 0) {
+ ff->ff_division = 1;
} else if (strcmp(feature, "braces") == 0) {
PyErr_SetString(PyExc_SyntaxError,
"not a chance");
@@ -234,6 +236,7 @@ PyNode_Future(node *n, char *filename)
ff->ff_last_lineno = -1;
ff->ff_nested_scopes = 0;
ff->ff_generators = 0;
+ ff->ff_division = 0;
if (future_parse(ff, n, filename) < 0) {
PyMem_Free((void *)ff);