code: def get_proj(prj_code):
      
      if prj_code in CUSTOM_PRJ:
          proj = pyproj.Proj(CUSTOM_PRJ[prj_code])
      else:
          proj = pyproj.Proj(init=prj_code)
      return proj
docs: Helper method for handling projection codes that are unknown to pyproj
  
        Args:
            prj_code (str): an epsg proj code
  
        Returns:
            projection: a pyproj projection