A nicer drop-in-replacement for Python sys.excepthook. It will add some useful information for each frame, like printing the relevant variables (relevant = referenced in the code line). Also see Python source and comments for further details.
You can just copy over the file better_exchook.py to your project. Or alternatively, it is also available on PyPI and can be installed via:
pip install better_exchookPython example code:
try:
x = {1:2, "a":"b"}
def f():
y = "foo"
x, 42, sys.stdin.__class__, sys.exc_info, y, z
f()
except Exception:
better_exchook(*sys.exc_info())Output:
EXCEPTION
Traceback (most recent call last):
File "better_exchook.py", line 478, in <module>
line: f()
locals:
f = <local> <function f at 0x107f1de60>
File "better_exchook.py", line 477, in f
line: x, 42, sys.stdin.__class__, sys.exc_info, y, z
locals:
x = <global> {'a': 'b', 1: 2}
sys = <global> <module 'sys' (built-in)>
sys.stdin = <global> <open file '<stdin>', mode 'r' at 0x107d9f0c0>
sys.stdin.__class__ = <global> <type 'file'>
sys.exc_info = <global> <built-in function exc_info>
y = <local> 'foo'
z = <not found>
NameError: global name 'z' is not definedPython example code:
try:
f = lambda x: None
f(x, y)
except Exception:
better_exchook(*sys.exc_info())Output:
EXCEPTION
Traceback (most recent call last):
File "better_exchook.py", line 484, in <module>
line: f(x, y)
locals:
f = <local> <function <lambda> at 0x107f1df50>
x = <local> {'a': 'b', 1: 2}
y = <not found>
NameError: name 'y' is not definedPython example code:
try:
(lambda x: None)(__name__,
42) # multiline
except Exception:
better_exchook(*sys.exc_info())Output:
EXCEPTION
Traceback (most recent call last):
File "better_exchook.py", line 490, in <module>
line: (lambda x: None)(__name__,
42) # multiline
locals:
x = <local> {'a': 'b', 1: 2}
__name__ = <local> '__main__', len = 8
TypeError: <lambda>() takes exactly 1 argument (2 given)Python example code:
# use this to overwrite the global exception handler
sys.excepthook = better_exchook
# and fail
finalfail(sys)Output:
EXCEPTION
Traceback (most recent call last):
File "better_exchook.py", line 497, in <module>
line: finalfail(sys)
locals:
finalfail = <not found>
sys = <local> <module 'sys' (built-in)>
NameError: name 'finalfail' is not defined- Similar projects:
See this related StackOverflow question.
– Albert Zeyer, <http://www.az2000.de>
1 maintainer
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Release files for better-exchook 1.20160612.134947
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