Is there a simple way to wrap a built-in function for the whole package?

[jfong]

I get a package from Pypi. The package has many modules using built-in open() 
function. I like to redefine all the open() there with the default encoding 
'utf-8', but not for code outside the package. Maybe I can put my def statement 
at the beginning of every module of this package, but just wondering is there a 
simple way of doing it?

Best Regards,
Jach
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Why won't the run-time error reporter point to the error position with a caret like the syntax error reporter does? It knows exactly where the error is.

[jsalsman]

Honestly this is the only thing in over half a decade of daily python use which 
has disappointed me enough to want to ask the devs:

>>> print(1/)
  File "", line 1
print(1/)
^
SyntaxError: invalid syntax
>>> print(1/1, 1/0, 1/1)
Traceback (most recent call last):
  File "", line 1, in 
ZeroDivisionError: division by zero
>>> print(
... 1
... /
... 1
... ,
... 1
... /
... 0 # line 8
... ,
... 1
... /
... 1
... )
Traceback (most recent call last):
  File "", line 8, in 
ZeroDivisionError: division by zero

Why not print the caret?
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Re: Why won't the run-time error reporter point to the error position with a caret like the syntax error reporter does? It knows exactly where the error is.

[Terry Reedy]

On 7/31/2019 11:19 PM, jsals...@gmail.com wrote:

Honestly this is the only thing in over half a decade of daily python use which 
has disappointed me enough to want to ask the devs:


print(1/)

   File "", line 1
 print(1/)
 ^
SyntaxError: invalid syntax


SyntaxErrors mostly come from the parser, occasionally from the 
compiler, both of which have access to line and column.



print(1/1, 1/0, 1/1)

Traceback (most recent call last):
   File "", line 1, in 
ZeroDivisionError: division by zero


This comes from the runtime engine, which only has access to line 
numbers, and even line numbers lie when a statement spans multiple 
lines.  In CPython, the runtime engine is executing bytecodes, and 
bytecode do not correspond to column numbers.  In something like
"a + b / (2 * c + d//3)", if the denominator (which could be on multiple 
lines) is 0, where should a caret point?


--
Terry Jan Reedy

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