En Fri, 09 Apr 2010 23:19:48 -0300, kwatch <kwa...@gmail.com> escribió:
On 4月8日, 午後12:52, "Gabriel Genellina" <gagsl-...@yahoo.com.ar> wrote:
The built-in SyntaxError exception does what you want. Constructor
parameters are undocumented, but they're as follows:
raise SyntaxError("A descriptive error message", (filename,
linenum, colnum, source_line))
colnum is used to place the ^ symbol (10 in this fake example). Output:
Traceback (most recent call last):
File "1.py", line 9, in <module>
foo()
File "1.py", line 7, in foo
raise SyntaxError("A descriptive error message", (filename,
linenum, colnum, "this is line 123 in example.file"))
File "example.file", line 123
this is line 123 in example.file
^
SyntaxError: A descriptive error message
By the way, is it hard to specify any other exception class instead of
SyntaxError?
The SyntaxError class is a good solution in my case, but if possible,
I want to know
more general solution to specify filename and linenum for exception.
You can always store any info you want in the exception object, just write
__str__ accordingly.
The advantage of SyntaxError is that it is special-cased in the
interpreter itself as to add some spaces and the ^ character.
The disadvantages are already pointed out by Dennis Lee Bieber and aren't
minor.
--
Gabriel Genellina
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