Last round of adapting style of documenting argument default values.
diff --git a/Doc/library/traceback.rst b/Doc/library/traceback.rst
index 5c42740..1450797 100644
--- a/Doc/library/traceback.rst
+++ b/Doc/library/traceback.rst
@@ -20,7 +20,7 @@
The module defines the following functions:
-.. function:: print_tb(traceback[, limit[, file]])
+.. function:: print_tb(traceback, limit=None, file=None)
Print up to *limit* stack trace entries from *traceback*. If *limit* is omitted
or ``None``, all entries are printed. If *file* is omitted or ``None``, the
@@ -28,7 +28,7 @@
object to receive the output.
-.. function:: print_exception(type, value, traceback[, limit[, file[, chain]]])
+.. function:: print_exception(type, value, traceback, limit=None, file=None, chain=True)
Print exception information and up to *limit* stack trace entries from
*traceback* to *file*. This differs from :func:`print_tb` in the following
@@ -47,19 +47,19 @@
exception.
-.. function:: print_exc([limit[, file[, chain]]])
+.. function:: print_exc(limit=None, file=None, chain=True)
This is a shorthand for ``print_exception(*sys.exc_info())``.
-.. function:: print_last([limit[, file[, chain]]])
+.. function:: print_last(limit=None, file=None, chain=True)
This is a shorthand for ``print_exception(sys.last_type, sys.last_value,
sys.last_traceback, limit, file)``. In general it will work only after
an exception has reached an interactive prompt (see :data:`sys.last_type`).
-.. function:: print_stack([f[, limit[, file]]])
+.. function:: print_stack(f=None, limit=None, file=None)
This function prints a stack trace from its invocation point. The optional *f*
argument can be used to specify an alternate stack frame to start. The optional
@@ -67,7 +67,7 @@
:func:`print_exception`.
-.. function:: extract_tb(traceback[, limit])
+.. function:: extract_tb(traceback, limit=None)
Return a list of up to *limit* "pre-processed" stack trace entries extracted
from the traceback object *traceback*. It is useful for alternate formatting of
@@ -78,7 +78,7 @@
stripped; if the source is not available it is ``None``.
-.. function:: extract_stack([f[, limit]])
+.. function:: extract_stack(f=None, limit=None)
Extract the raw traceback from the current stack frame. The return value has
the same format as for :func:`extract_tb`. The optional *f* and *limit*
@@ -105,7 +105,7 @@
occurred is the always last string in the list.
-.. function:: format_exception(type, value, tb[, limit[, chain]])
+.. function:: format_exception(type, value, tb, limit=None, chain=True)
Format a stack trace and the exception information. The arguments have the
same meaning as the corresponding arguments to :func:`print_exception`. The
@@ -114,18 +114,18 @@
same text is printed as does :func:`print_exception`.
-.. function:: format_exc([limit[, chain]])
+.. function:: format_exc(limit=None, chain=True)
This is like ``print_exc(limit)`` but returns a string instead of printing to a
file.
-.. function:: format_tb(tb[, limit])
+.. function:: format_tb(tb, limit=None)
A shorthand for ``format_list(extract_tb(tb, limit))``.
-.. function:: format_stack([f[, limit]])
+.. function:: format_stack(f=None, limit=None)
A shorthand for ``format_list(extract_stack(f, limit))``.