hello,
I want to raise errors in my py scripts then these error catch by into @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK
What can be the best method ?
a/ to re-raise a error from a try sequence :
these sample can catch 3 types of error : path not found, json not correct, mykey not found ...
def myfunc(path):
result = ''
try:
f_path = open(path)
config = json.load(f_path)
a = config["mykey"]
except:
raise
how can I have it at BASIC level into @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK
in this case, @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK are null.
b/ to raise a error from script :
def myfnc(a)
if a < 2:
raise ValueError(f"integer above 1 expected, got {a}")
in this case, @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK are null.
Thanks
manu
Manu,
I did some digging - does this work for you?
def demo_catch():
try:
raise ValueError('This is ValueError')
raise Exception('This is the exception')
except Exception as error:
print('Caught error: ' + repr(error))
>>> demo_catch()
Regards
JJ
hello,
I want to raise errors in my py scripts then these error catch by into @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK
What can be the best method ?
a/ to re-raise a error from a try sequence :
these sample can catch 3 types of error : path not found, json not correct, mykey not found ...
def myfunc(path):
result = ''
try:
f_path = open(path)
config = json.load(f_path)
a = config["mykey"]
except:
raise
how can I have it at BASIC level into @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK
in this case, @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK are null.
b/ to raise a error from script :
def myfnc(a)
if a < 2:
raise ValueError(f"integer above 1 expected, got {a}")
in this case, @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK are null.
Thanks
manu
Manu,
I am wondering why you would expect anything when you raise an exception without defining what you raised, in the first example.
The 2nd code segment would raise the exceptions and pass @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, and @PYEXCEPTIONTRACEBACK
forum.py
-----
def myfnc(a):
if a < 2:
raise ValueError(f"integer above 1 expected, got {a}")
return a
------
TEST
----
ModuleName = "forum"
FuncName = "myfnc"
* call the Python function
CRT "Enter data ":;INPUT stuff
IF NUM(stuff) THEN stuff += 0
pyresults = PyCallFunction(ModuleName, FuncName, stuff)
IF @PYEXCEPTIONTYPE = '' THEN
CRT "OUTPUT = " :pyresults
END ELSE
CRT " EXCEPTION TYPE:" :@PYEXCEPTIONTYPE
CRT " EXCEPTION MESSAGE:" :@PYEXCEPTIONMSG
CRT "EXCEPTIONTRACEBACK:" :@PYEXCEPTIONTRACEBACK
END
END
-----
Then when I run, I get:
>RUN PBP TEST
Enter data ?0
EXCEPTION TYPE:ValueError
EXCEPTION MESSAGE:integer above 1 expected, got 0
EXCEPTIONTRACEBACK:Traceback (most recent call last):
File "C:U2UVXDEMOPPforum.py", line 4, in myfnc
raise ValueError(f"integer above 1 expected, got {a}")
ValueError: integer above 1 expected, got 0
So, I am not sure why you mentioned you received null?
As for best practice, I would recommend you create your own custom exception, and raise that in your code.
Following is a good site that shows how this can be done:
https://www.programiz.com/python-programming/user-defined-exception#:~:text=In%20Python%2C%20we%20can%20define,pass%20try%3A%20...
Mike
hello,
I want to raise errors in my py scripts then these error catch by into @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK
What can be the best method ?
a/ to re-raise a error from a try sequence :
these sample can catch 3 types of error : path not found, json not correct, mykey not found ...
def myfunc(path):
result = ''
try:
f_path = open(path)
config = json.load(f_path)
a = config["mykey"]
except:
raise
how can I have it at BASIC level into @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK
in this case, @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK are null.
b/ to raise a error from script :
def myfnc(a)
if a < 2:
raise ValueError(f"integer above 1 expected, got {a}")
in this case, @PYEXCEPTIONTYPE , @PYEXCEPTIONMSG, @PYEXCEPTIONTRACEBACK are null.
Thanks
manu
Hi Mike,
In my sample, error can come from : path not found, json not correct, mykey not found.
Try: jump to except at first error.
If I place a 'raise' alone my script is supposed to re-raise the last error to the caller.
I do not want to handle all potentialité errors into the py module, the calller (uvbasic) will do it.
In my case, when except occurs uvbasic did not receive the @PYEXCEPTION, all are null.
(the sample you provide first works correctly).
Many thanks for your help.
Manu
