#pip install pyproj
from pyproj import CRS, Transformer
def sk_to_wgs84(lat: str, lon: str) -> tuple:
sk = CRS('epsg:7827')
wgs84 = CRS('epsg:4326')
transformer = Transformer.from_crs(sk, wgs84)
x_wgs84, y_wgs84 = transformer.transform(lat, lon)
return x_wgs84, y_wgs84