def get_proj(prj_code):
if prj_code in CUSTOM_PRJ:<EOL><INDENT>proj = pyproj.Proj(CUSTOM_PRJ[prj_code])<EOL><DEDENT>else:<EOL><INDENT>proj = pyproj.Proj(init=prj_code)<EOL><DEDENT>return proj<EOL>
Helper method for handling projection codes that are unknown to pyproj

Args:
    prj_code (str): an epsg proj code

Returns:
    projection: a pyproj projection