I have a string that is a python traceback collapsed into a single line. I want to retrieve the multiline format of the traceback for the sake of readability. What is the best way to achieve it?
I see that traceback module has similar functionality, but I don't see how to pass a string as an argument there:
https://docs.python.org/3/library/traceback.html
Example input:
'Traceback (most recent call last): File "<stdin>", line 1, in <module> Exception'
Example output:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
Exception
Related
I there an option to enable "standard format" for python traceback. Ie, instead of
Traceback (most recent call last):
File "./make_directory.py", line 7, in <module>
data = json.loads(sys.argv[2])
IndexError: list index out of range
It should look like
Traceback (most recent call last):
./make_directory.py:7: error
7 | data = json.loads(sys.argv[2])
IndexError: list index out of range
I am looking for a solution that does not require any changes to the script in this. In this case make_directory.py.
I'm trying to write a nice error handler for my code, so that when it fails, the logs, traceback and other relevant info get emailed to me.
I can't figure out how to take an exception object and extract the traceback.
I find the traceback module pretty confusing, mostly because it doesn't deal with exceptions at all. It just fetches some global variables from somewhere, assuming that I want the most recent exception. But what if I don't? What if I want to ignore some exception in my error handler? (e.g. if I fail to send me email and want to retry.)
What I want
import traceback as tb
# some function that will fail after a few recursions
def myfunc(x):
assert x > 0, "oh no"
return myfunc(x-1)
try:
myfunc(3)
except Exception as e:
traceback_str = tb.something(e)
Note that tb.something takes e as an argument.
There's lots of questions on Stack Overflow about using the traceback module to get a traceback string. The unique thing about this question is how to get it from the caught exception, instead of global variables.
Result:
traceback_str contains the string:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 3, in myfunc
File "<stdin>", line 3, in myfunc
File "<stdin>", line 3, in myfunc
File "<stdin>", line 2, in myfunc
AssertionError: oh no
Note that it contains not just the most recent function call, but the whole stack, and includes the "AssertionError" at the end
The correct function for tb.something(e) is
''.join(tb.format_exception(None, e, e.__traceback__))
I come from a python background, and error traceback back there is so easy to follow and allows for quick exception identification.
I was wondering if there was a package or a plugin (VSCode) that formats or makes error tracing easier in Flutter.
For non Python user, here are two examples:
Traceback (most recent call last):
File "/path/to/example.py", line 4, in <module>
greet('Chad')
File "/path/to/example.py", line 2, in greet
print('Hello, ' + someon)
NameError: name 'someon' is not defined
$ python example.py
Traceback (most recent call last):
File "/path/to/greetings.py", line 19, in <module>
greet('Chad', greting='Yo')
TypeError: greet() got an unexpected keyword argument 'greting'
I receive python stack traces from logs and they sometimes come in very weird format, e.g. no new lines or incorrectly formated. Here is an syntactic example:
Traceback (most recent call last): File "<stdin>", line 1, in <module> File "<stdin>", line 2, in bar File "<stdin>", line 2, in foo ValueError
Unfortunately, there is no way I can change the format of the logs, as I don't have an access to that system.
Is there an automatic way of formatting those exceptions to standard python format, so that it would look something like this:
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "<stdin>", line 2, in bar
File "<stdin>", line 2, in foo
ValueError
I've quickly went through traceback module's documentation, but it seems it's only for runtime exceptions.
I am successful in extracting the response from a JSON. However, I am unable to list all or extract what I need on the key and its pair
Below is my code:
import requests
response = requests.get("https://www.woolworths.com.au/apis/ui/Product/Specials/half-price?GroupID=948&isMobile=false&pageNumber=1&pageSize=36&richRelevanceId=SP_948&sortType=Personalised")
data = response.json()
I tried to do data['Stockcode']
but no luck or I use data['Product']
It says:
>>> data['Product']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: 'Product'
>>> data['Products']
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
KeyError: 'Products'
try:
>>> data['Items'][0]['Products']
Print data and see its data structure How its constructed then you can extract values as per your need