mirror of
https://github.com/deepset-ai/haystack.git
synced 2025-11-10 23:04:02 +00:00
52e7a77595
* generalimport -> lazy-imports * remove generalimport * fix pdftotextconverter import check * customize error messages * pylint * fix sql.py * pylint * Update haystack/document_stores/sql.py Co-authored-by: Massimiliano Pippi <mpippi@gmail.com> * make contextmanager less verbose * do not catch syntax errors * review feedback * Update haystack/nodes/file_converter/pdf.py --------- Co-authored-by: Massimiliano Pippi <mpippi@gmail.com>
45 lines
1.5 KiB
Python
45 lines
1.5 KiB
Python
from typing import Optional, Type
|
|
from types import TracebackType
|
|
from lazy_imports.try_import import _DeferredImportExceptionContextManager
|
|
|
|
|
|
DEFAULT_IMPORT_ERROR_MSG = "Try 'pip install {}'"
|
|
|
|
|
|
class LazyImport(_DeferredImportExceptionContextManager):
|
|
"""
|
|
Wrapper on top of lazy_import's _DeferredImportExceptionContextManager that adds the possibility to customize the
|
|
error messages.
|
|
"""
|
|
|
|
def __init__(self, message: str = DEFAULT_IMPORT_ERROR_MSG) -> None:
|
|
super().__init__()
|
|
self.import_error_msg = message
|
|
|
|
def __exit__(
|
|
self, exc_type: Optional[Type[Exception]], exc_value: Optional[Exception], traceback: Optional[TracebackType]
|
|
) -> Optional[bool]:
|
|
"""Exit the context manager.
|
|
|
|
Args:
|
|
exc_type:
|
|
Raised exception type. :obj:`None` if nothing is raised.
|
|
exc_value:
|
|
Raised exception object. :obj:`None` if nothing is raised.
|
|
traceback:
|
|
Associated traceback. :obj:`None` if nothing is raised.
|
|
|
|
Returns:
|
|
:obj:`None` if nothing is deferred, otherwise :obj:`True`.
|
|
:obj:`True` will suppress any exceptions avoiding them from propagating.
|
|
|
|
"""
|
|
if isinstance(exc_value, ImportError):
|
|
message = (
|
|
f"Failed to import '{exc_value.name}'. {self.import_error_msg.format(exc_value.name)}. "
|
|
f"Original error: {exc_value}"
|
|
)
|
|
self._deferred = (exc_value, message)
|
|
return True
|
|
return None
|