Source code for pytablewriter.writer.binary._interface

import abc

from .._table_writer import AbstractTableWriter


[docs]class BinaryWriterInterface(metaclass=abc.ABCMeta):
[docs] @abc.abstractmethod def is_opened(self) -> bool: # pragma: no cover pass
[docs] @abc.abstractmethod def open(self, file_path: str) -> None: # pragma: no cover """ Open a file for output stream. Args: file_path (str): path to the file. """
[docs]class AbstractBinaryTableWriter(AbstractTableWriter, BinaryWriterInterface): @property def stream(self): return self._stream @stream.setter def stream(self, value) -> None: raise RuntimeError( "cannot assign a stream to binary format writers. use open method instead." ) @property def support_split_write(self) -> bool: return True def __init__(self, **kwargs) -> None: super().__init__(**kwargs) self.table_name = kwargs.get("table_name", "") self._stream = None def __del__(self) -> None: self.close()
[docs] def is_opened(self) -> bool: return self.stream is not None
[docs] def dumps(self) -> str: raise NotImplementedError("binary format writers did not support dumps method")
def _verify_stream(self) -> None: if self.stream is None: raise OSError("null output stream. required to open(file_path) first.") def _write_value_row_separator(self) -> None: pass