- _print(file, str='', terminator='\012')
- extract_stack(f=None, limit=None)
- Extract the raw traceback from the current stack frame. The
return value has the same format as for extract_tb(). The optional
'f' and 'limit' arguments have the same meaning as for print_stack().
Each item in the list is a quadruple (filename, line number,
function name, text), and the entries are in order from oldest
to newest stack frame.
- extract_tb(tb, limit=None)
- Return a list of up to 'limit' pre-processed stack trace entries
extracted from the traceback object 'traceback'. This is useful for
alternate formatting of stack traces. If 'limit' is omitted or None,
all entries are extracted. A pre-processed stack trace entry is a
quadruple (filename, line number, function name, text) representing
the information that is usually printed for a stack trace. The text
is a string with leading and trailing whitespace stripped; if the
source is not available it is None.
- format_exception(etype, value, tb, limit=None)
- Format a stack trace and the exception information. The arguments
have the same meaning as the corresponding arguments to
print_exception(). The return value is a list of strings, each
ending in a newline and some containing internal newlines. When
these lines are contatenated and printed, exactly the same text is
printed as does print_exception().
- format_exception_only(etype, value)
- Format the exception part of a traceback. The arguments are the
exception type and value such as given by sys.last_type and
sys.last_value. The return value is a list of strings, each ending
in a newline. Normally, the list contains a single string;
however, for SyntaxError exceptions, it contains several lines that
(when printed) display detailed information about where the syntax
error occurred. The message indicating which exception occurred is
the always last string in the list.
- Given a list of tuples as returned by extract_tb() or
extract_stack(), return a list of strings ready for printing.
Each string in the resulting list corresponds to the item with
the same index in the argument list. Each string ends in a
newline; the strings may contain internal newlines as well, for
those items whose source text line is not None.
- format_stack(f=None, limit=None)
- A shorthand for 'format_list(extract_stack(f, limit))'.
- format_tb(tb, limit=None)
- A shorthand for 'format_list(extract_stack(f, limit)).
- print_exc(limit=None, file=None)
- This is a shorthand for 'print_exception(sys.exc_type,
sys.exc_value, sys.exc_traceback, limit, file)'.
(In fact, it uses sys.exc_info() to retrieve the same information
in a thread-safe way.)
- print_exception(etype, value, tb, limit=None, file=None)
- Print exception information and up to 'limit' stack trace entries
from the traceback 'tb' to 'file'. This differs from print_tb() in
the following ways: (1) if traceback is not None, it prints a header
"Traceback (most recent call last):"; (2) it prints the exception type and
value after the stack trace; (3) if type is SyntaxError and value has
the appropriate format, it prints the line where the syntax error
occurred with a caret on the next line indicating the approximate
position of the error.
- print_last(limit=None, file=None)
- This is a shorthand for 'print_exception(sys.last_type,
sys.last_value, sys.last_traceback, limit, file)'.
- print_list(extracted_list, file=None)
- Print the list of tuples as returned by extract_tb() or
extract_stack() as a formatted stack trace to the given file.
- 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 at which to start. The optional 'limit' and 'file' arguments
have the same meaning as for print_exception().
- print_tb(tb, limit=None, file=None)
- Print up to 'limit' stack trace entries from the traceback 'tb'.
If 'limit' is omitted or None, all entries are printed. If 'file' is
omitted or None, the output goes to sys.stderr; otherwise 'file'
should be an open file or file-like object with a write() method.
- Calculate the correct line number of the traceback given in tb
(even with -O on).