Guido van Rossum | 526beed | 1994-07-01 15:36:46 +0000 | [diff] [blame] | 1 | # Format and print Python stack traces |
| 2 | |
| 3 | import linecache |
| 4 | import string |
| 5 | import sys |
Guido van Rossum | c7acf2a | 1995-02-27 13:15:45 +0000 | [diff] [blame] | 6 | import types |
Guido van Rossum | 526beed | 1994-07-01 15:36:46 +0000 | [diff] [blame] | 7 | |
| 8 | def print_tb(tb, limit = None): |
| 9 | if limit is None: |
| 10 | if hasattr(sys, 'tracebacklimit'): |
| 11 | limit = sys.tracebacklimit |
| 12 | n = 0 |
| 13 | while tb is not None and (limit is None or n < limit): |
| 14 | f = tb.tb_frame |
| 15 | lineno = tb.tb_lineno |
| 16 | co = f.f_code |
| 17 | filename = co.co_filename |
| 18 | name = co.co_name |
| 19 | print ' File "%s", line %d, in %s' % (filename, lineno, name) |
| 20 | line = linecache.getline(filename, lineno) |
| 21 | if line: print ' ' + string.strip(line) |
| 22 | tb = tb.tb_next |
| 23 | n = n+1 |
| 24 | |
| 25 | def extract_tb(tb, limit = None): |
| 26 | if limit is None: |
| 27 | if hasattr(sys, 'tracebacklimit'): |
| 28 | limit = sys.tracebacklimit |
| 29 | list = [] |
| 30 | n = 0 |
| 31 | while tb is not None and (limit is None or n < limit): |
| 32 | f = tb.tb_frame |
| 33 | lineno = tb.tb_lineno |
| 34 | co = f.f_code |
| 35 | filename = co.co_filename |
| 36 | name = co.co_name |
| 37 | line = linecache.getline(filename, lineno) |
| 38 | if line: line = string.strip(line) |
| 39 | else: line = None |
| 40 | list.append(filename, lineno, name, line) |
| 41 | tb = tb.tb_next |
| 42 | n = n+1 |
| 43 | return list |
| 44 | |
Guido van Rossum | c7acf2a | 1995-02-27 13:15:45 +0000 | [diff] [blame] | 45 | def print_exception(etype, value, tb, limit = None): |
Guido van Rossum | 7aeb4b9 | 1994-08-23 13:32:20 +0000 | [diff] [blame] | 46 | if tb: |
| 47 | print 'Traceback (innermost last):' |
| 48 | print_tb(tb, limit) |
Guido van Rossum | c7acf2a | 1995-02-27 13:15:45 +0000 | [diff] [blame] | 49 | if type(etype) == types.ClassType: |
| 50 | stype = etype.__name__ |
Guido van Rossum | 7aeb4b9 | 1994-08-23 13:32:20 +0000 | [diff] [blame] | 51 | else: |
Guido van Rossum | c7acf2a | 1995-02-27 13:15:45 +0000 | [diff] [blame] | 52 | stype = etype |
| 53 | if value is None: |
| 54 | print stype |
| 55 | else: |
| 56 | if etype is SyntaxError: |
Guido van Rossum | 7aeb4b9 | 1994-08-23 13:32:20 +0000 | [diff] [blame] | 57 | try: |
| 58 | msg, (filename, lineno, offset, line) = value |
| 59 | except: |
| 60 | pass |
| 61 | else: |
| 62 | if not filename: filename = "<string>" |
Guido van Rossum | c7acf2a | 1995-02-27 13:15:45 +0000 | [diff] [blame] | 63 | print ' File "%s", line %d' % \ |
| 64 | (filename, lineno) |
Guido van Rossum | 7aeb4b9 | 1994-08-23 13:32:20 +0000 | [diff] [blame] | 65 | i = 0 |
Guido van Rossum | c7acf2a | 1995-02-27 13:15:45 +0000 | [diff] [blame] | 66 | while i < len(line) and \ |
| 67 | line[i] in string.whitespace: |
Guido van Rossum | 7aeb4b9 | 1994-08-23 13:32:20 +0000 | [diff] [blame] | 68 | i = i+1 |
| 69 | s = ' ' |
| 70 | print s + string.strip(line) |
| 71 | for c in line[i:offset-1]: |
| 72 | if c in string.whitespace: |
| 73 | s = s + c |
| 74 | else: |
| 75 | s = s + ' ' |
| 76 | print s + '^' |
| 77 | value = msg |
Guido van Rossum | c7acf2a | 1995-02-27 13:15:45 +0000 | [diff] [blame] | 78 | print '%s: %s' % (stype, value) |
Guido van Rossum | 526beed | 1994-07-01 15:36:46 +0000 | [diff] [blame] | 79 | |
| 80 | def print_exc(limit = None): |
| 81 | print_exception(sys.exc_type, sys.exc_value, sys.exc_traceback, |
| 82 | limit) |
| 83 | |
| 84 | def print_last(limit = None): |
| 85 | print_exception(sys.last_type, sys.last_value, sys.last_traceback, |
| 86 | limit) |