fix issue #537 (#538)

Author: gijzelaerr

snap7/client.py

@@ -469,9 +469,6 @@ def list_blocks_of_type(self, block_type: Block, size: int) -> Union[int, Array[
 
         Returns:
             If size is 0, it returns a 0, otherwise an `Array` of specified block type.
-
-        Raises:
-            :obj:`ValueError`: if the `block_type` is not valid.
         """
 
         logger.debug(f"listing blocks of type: {block_type} size: {size}")
@@ -498,11 +495,8 @@ def get_block_info(self, block_type: Block, db_number: int) -> TS7BlockInfo:
         Returns:
             Structure of information from block.
 
-        Raises:
-            :obj:`ValueError`: if the `blocktype` is not valid.
-
         Examples:
-            >>> block_info = Client().get_block_info("DB", 1)
+            >>> block_info = Client().get_block_info(block_type.DB, 1)
             >>> print(block_info)
             Block type: 10
             Block number: 1