def update_user_library(library):
 for stylelib_path in iter_user_libraries():
  styles = read_style_directory(stylelib_path)
  update_nested_dict(library, styles)
 return library

def update_user_library ( library ) : for stylelib_path in iter_user_libraries ( ) : styles = read_style_directory ( stylelib_path ) update_nested_dict ( library , styles ) return library
update style library with user-defined rc files .