Python/Exception - Revision history

Tacoball at 04:34, 26 September 2019

2019-09-26T04:34:59Z

← Older revision		Revision as of 04:34, 26 September 2019
Line 1:		Line 1:
			=== Customized messages for traceback ===
			<source lang="python">
			import io
			import sys
			import traceback

			def b():
			n = 1 / 0

			def a():
			b()

			if __name__ == '__main__':
			try:
			a()
			except:
			exc_type, exc_val, exc_tb = sys.exc_info()
			msgio = io.StringIO()
			msgio.write('Found an exception "%s" (%s) at:' % (exc_val, exc_type.__name__))

			ss = traceback.extract_tb(exc_tb)
			ss.reverse()
			indent_level = 1
			for frm in ss:
			msgio.write('\n')
			msgio.write(' ' * indent_level)
			msgio.write('%s:%s - %s' % (frm.filename, frm.lineno, frm.line))
			indent_level += 1

			msg = msgio.getvalue()
			msgio.close()
			print(msg)
			</source>

	=== except ... as ex: ===		=== except ... as ex: ===

2019-09-26T03:55:46Z

traceback.print_exc

2019-09-26T03:55:28Z

sys.exc_info()

2019-09-26T03:55:16Z

traceback.print_exc

2019-09-26T03:53:30Z

2019-09-26T03:53:12Z

@@ Line 32: / Line 32: @@
      except:
          traceback.print_exc()
 </source>

2019-09-26T03:50:35Z

traceback

2019-09-26T03:50:18Z

2019-09-26T03:49:59Z

← Older revision		Revision as of 03:49, 26 September 2019
Line 1:		Line 1:
			=== except ... as ...: ===

	<source lang="python">		<source lang="python">
	try:		try:
	n = 1 / 0		n = 1 / 0
	except Exception as e:		except Exception as ex:
	print('It sucks!')		print('It sucks!')
	print('Class: {}'.format(type(e).__name__))		print('Class: {}'.format(type(ex).__name__))
	print('Message: {}'.format(e))		print('Message: {}'.format(ex))
	print('Args:')		print('Args:')
	for arg in e.args:		for arg in ex.args:
	print(' {}'.format(arg))		print(' {}'.format(arg))
	</source>		</source>

			=== traceback ===

	<source lang="python">		<source lang="python">

2019-09-26T03:48:05Z

@@ Line 9: / Line 9: @@
      for arg in e.args:
          print('    {}'.format(arg))
 </source>