cpython/Lib/traceback.py
1994-07-01 15:36:46 +00:00

58 lines
1.4 KiB
Python

# Format and print Python stack traces
import linecache
import string
import sys
def print_tb(tb, limit = None):
if limit is None:
if hasattr(sys, 'tracebacklimit'):
limit = sys.tracebacklimit
n = 0
while tb is not None and (limit is None or n < limit):
f = tb.tb_frame
lineno = tb.tb_lineno
co = f.f_code
filename = co.co_filename
name = co.co_name
print ' File "%s", line %d, in %s' % (filename, lineno, name)
line = linecache.getline(filename, lineno)
if line: print ' ' + string.strip(line)
tb = tb.tb_next
n = n+1
def extract_tb(tb, limit = None):
if limit is None:
if hasattr(sys, 'tracebacklimit'):
limit = sys.tracebacklimit
list = []
n = 0
while tb is not None and (limit is None or n < limit):
f = tb.tb_frame
lineno = tb.tb_lineno
co = f.f_code
filename = co.co_filename
name = co.co_name
line = linecache.getline(filename, lineno)
if line: line = string.strip(line)
else: line = None
list.append(filename, lineno, name, line)
tb = tb.tb_next
n = n+1
return list
def print_exception(type, value, tb, limit = None):
print 'Traceback (innermost last):'
print_tb(tb, limit)
print type,
if value is not None: print ':', value,
print
def print_exc(limit = None):
print_exception(sys.exc_type, sys.exc_value, sys.exc_traceback,
limit)
def print_last(limit = None):
print_exception(sys.last_type, sys.last_value, sys.last_traceback,
limit)