How is this different from the existing exception handling?
>From https://docs.python.org/3/tutorial/errors.html#exceptions :
> The last except clause may omit the exception name(s), to serve as a
wildcard. Use this with extreme caution, since it is easy to mask a real
programming error in this way! It can also be used to print an error
message and then re-raise the exception (allowing a caller to handle the
exception as well):
```python
import sys
try:
f = open('myfile.txt')
s = f.readline()
i = int(s.strip())
except OSError as err:
print("OS error: {0}".format(err))
except ValueError:
print("Could not convert data to an integer.")
except:
print("Unexpected error:", sys.exc_info()[0])
raise
```
https://docs.python.org/3/library/exceptions.html
https://docs.python.org/3/c-api/exceptions.html
On Sun, Oct 11, 2020, 12:25 PM haael <ha...@interia.pl> wrote:
>
> Very often I use the following construction (especially in operators):
>
> try:
> something
> except SomeError:
> try:
> something_else
> except AnotherError:
> try:
> something_completely_different
> except Whatever:
> return NotImplemented
>
>
> I propose a construction to simplify the staircase hierarchy of
> exception handlers:
>
> try:
> something
> except SomeError try:
> something_else
> except AnotherError try:
> something_completely_different
> except Whatever:
> return NotImplemented
>
> This would be somewhat analogous to `else if` blocks.
>
> This pattern is very common in operator implementations. And this
> proposal could simplify it a bit.
>
> haael
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