File size: 1,403 Bytes
dc4e6da | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | from dataclasses import is_dataclass
import pathlib
import base64
from typing import get_type_hints
def from_dict(cls, data: dict):
"""
Recursively parse a dictionary into a dataclass instance.
Handles nested dataclasses and special types like pathlib.Path.
"""
type_hints = get_type_hints(cls)
kwargs = {}
for field_name, field_type in type_hints.items():
value = data.get(field_name)
if value is None:
kwargs[field_name] = None
elif getattr(field_type, "__origin__", None) is list:
subtype = field_type.__args__[0]
if is_dataclass(subtype):
kwargs[field_name] = [from_dict(subtype, v) for v in value]
elif subtype == pathlib.Path:
kwargs[field_name] = [pathlib.Path(v) for v in value]
else:
kwargs[field_name] = value
elif is_dataclass(field_type):
kwargs[field_name] = from_dict(field_type, value)
elif field_type == pathlib.Path:
kwargs[field_name] = pathlib.Path(value)
else:
kwargs[field_name] = value
return cls(**kwargs)
def image_to_base64(imgpath: pathlib.Path) -> str:
with open(imgpath, "rb") as image_file:
encoded_string = base64.b64encode(image_file.read())
return encoded_string.decode("utf-8")
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