[Python-checkins] peps: PEP 454: set_traceback_limit() requires nframe >= 1

[victor.stinner]

http://hg.python.org/peps/rev/72fc6b519f12
changeset:   5264:72fc6b519f12
user:        Victor Stinner <victor.stinner at gmail.com>
date:        Sun Nov 10 23:54:37 2013 +0100
summary:
  PEP 454: set_traceback_limit() requires nframe >= 1

files:
  pep-0454.txt |  12 ++++--------
  1 files changed, 4 insertions(+), 8 deletions(-)


diff --git a/pep-0454.txt b/pep-0454.txt
--- a/pep-0454.txt
+++ b/pep-0454.txt
@@ -153,6 +153,7 @@
 ``set_traceback_limit(nframe: int)`` function:
 
     Set the maximum number of frames stored in the traceback of a trace.
+    *nframe* must be greater or equal to ``1``.
 
     Storing more frames allocates more memory of the ``tracemalloc``
     module and makes Python slower. Use the ``get_tracemalloc_memory()``
@@ -163,9 +164,6 @@
     grouped by ``'traceback'`` or to compute cumulative statistics: see
     the ``Snapshot.statistics()`` method.
 
-    If the limit is set to ``0`` frame, a traceback with a frame will be
-    used for all traces: filename ``'<unknown>'`` at line number ``0``.
-
     Use the ``get_traceback_limit()`` function to get the current limit.
 
     The ``PYTHONTRACEMALLOC`` environment variable
@@ -456,11 +454,9 @@
     Sequence of ``Frame`` instances sorted from the most recent frame to
     the oldest frame.
 
-    A traceback contains at least ``1`` frame. If the ``tracemalloc``
-    module failed to get a frame, the filename ``"<unknown>"`` and the
-    line number ``0`` are used. If it failed to get the traceback or if
-    the traceback limit is ``0``, the traceback only contains a frame:
-    filename ``'<unknown>'`` at line number ``0``.
+    A traceback contains at least ``1`` frame. If the ``tracemalloc`` module
+    failed to get a frame, the filename ``"<unknown>"`` at line number ``0`` is
+    used.
 
     When a snapshot is taken, tracebacks of traces are limited to
     ``get_traceback_limit()`` frames. See the ``take_snapshot()``

-- 
Repository URL: http://hg.python.org/peps