Untitled

# GENERAL

from typing import Optional, Union, Dict, List, Tuple
from importlib import import_module

class Stitcher:
    def __init__(
        bla
    ) -> None:
        self.bla=bla


    @staticmethod
    def _import_optional(module_path: str, package: str) -> Any:
        try:
            return import_module(module_path)
        except ImportError:
            raise ImportError(f"Optional dependency {package} required. Install with pip install {package}")

    def process_images(self) -> None:
        ashlar = self._import_optional("ashlar", "ashlar")
        thumbnail = self._import_optional("ashlar.thumbnail", "ashlar")
        
        # Use the imported modules
        pass

    def read_files(self) -> None:
        if self.reader_type == "FilePatternReaderRescale":
            filepattern = self._import_optional("filepattern", "filepattern")
            # Use filepattern
        elif self.reader_type == "BioformatsReaderRescale":
            bioformats = self._import_optional("bioformats", "python-bioformats")
            # Use bioformats

# SPECIFIC
# In your case, you have a few nested functions here that are all called in stitch, but let's just assume that we inlined it into stitch
def stitch(self) -> None:
    try:
        from ashlar import thumbnail
        from ashlar.reg import EdgeAligner, Mosaic
        from ashlar.scripts.ashlar import process_axis_flip
    except ImportError:
        raise ImportError(
            "Optional dependency ashlar is required for stitching. "
            "Install with: pip install ashlar"
        )
        
    process_axis_flip(
        self.reader,
        flip_x=self.orientation["flip_x"], 
        flip_y=self.orientation["flip_y"]
    )
    
    self.aligner = EdgeAligner(
        self.reader,
        channel=self.stitching_channel_id,
        filter_sigma=self.filter_sigma,
        verbose=True,
        do_make_thumbnail=False,
        max_shift=self.max_shift,
    )