diff --git a/rst_include/libs/lib_block_options.py b/rst_include/libs/lib_block_options.py
index dff4366..9523f70 100644
--- a/rst_include/libs/lib_block_options.py
+++ b/rst_include/libs/lib_block_options.py
@@ -19,29 +19,29 @@
 def get_option_value_from_block_or_raise_if_empty_or_invalid(option: str, block: Block, value_must_be_int: bool = False) -> str:
 
     """
-    >>> block = lib_test.get_test_block_ok()
+    >>> my_block = lib_test.get_test_block_ok()
     >>> # test ok
-    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('code', block)
+    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('code', my_block)
     'python'
 
     >>> # empty value
-    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('pass-through1', block)
+    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('pass-through1', my_block)
     Traceback (most recent call last):
     ...
     ValueError: Error in File ".../README.template.rst", Line 47107: option "pass-through1" has no value
 
     >>> # option not found
-    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('no-option', block)
+    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('no-option', my_block)
     Traceback (most recent call last):
     ...
     ValueError: Error in File: ".../README.template.rst", option "no-option" not found in block starting with Line: 47100
 
     >>> # option check type integer ok
-    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('start-line', block, value_must_be_int=True)
+    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('start-line', my_block, value_must_be_int=True)
     '10'
 
     >>> # option check type not integer
-    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('start-after', block, value_must_be_int=True)
+    >>> get_option_value_from_block_or_raise_if_empty_or_invalid('start-after', my_block, value_must_be_int=True)
     Traceback (most recent call last):
     ...
     TypeError: Error in File ".../README.template.rst", Line 47105: option "start-after" has to be integer
@@ -56,8 +56,8 @@ def get_option_value_from_block_or_raise_if_empty_or_invalid(option: str, block:
 
 def get_option_value_from_block(option: str, block: Block) -> str:
     """
-    >>> block = lib_test.get_test_block_ok()
-    >>> get_option_value_from_block('code', block)
+    >>> my_block = lib_test.get_test_block_ok()
+    >>> get_option_value_from_block('code', my_block)
     'python'
     >>> get_option_value_from_block('encoding', block)
     'utf-8'
@@ -83,8 +83,8 @@ def get_option_value_from_source_line(source_line: SourceLine) -> str:
 
 def is_option_in_block(option: str, block: Block) -> bool:
     """
-    >>> block = lib_test.get_test_block_ok()
-    >>> is_option_in_block('code', block)
+    >>> my_block = lib_test.get_test_block_ok()
+    >>> is_option_in_block('code', my_block)
     True
     >>> is_option_in_block('no-option', block)
     False
@@ -100,8 +100,8 @@ def is_option_in_block(option: str, block: Block) -> bool:
 
 def get_source_line_number_for_option(option: str, block: Block) -> int:
     """
-    >>> block = lib_test.get_test_block_ok()
-    >>> get_source_line_number_for_option('code', block)
+    >>> my_block = lib_test.get_test_block_ok()
+    >>> get_source_line_number_for_option('code', my_block)
     47101
     >>> get_source_line_number_for_option('encoding', block)
     47102
@@ -121,8 +121,8 @@ def get_source_line_number_for_option(option: str, block: Block) -> int:
 
 def is_option_in_source_line(source_line: SourceLine, option: str) -> bool:
     """
-    >>> source_line = lib_classes.SourceLine(line_number=4711, content='   :code:')
-    >>> is_option_in_source_line(source_line, 'code')
+    >>> my_source_line = lib_classes.SourceLine(line_number=4711, content='   :code:')
+    >>> is_option_in_source_line(my_source_line, 'code')
     True
     >>> is_option_in_source_line(source_line, 'encoding')
     False
@@ -137,8 +137,8 @@ def is_option_in_source_line(source_line: SourceLine, option: str) -> bool:
 
 def get_option_key_from_source_line(source_line: SourceLine) -> str:
     """
-    >>> source_line = lib_classes.SourceLine(line_number=4711, content='   :code:')
-    >>> get_option_key_from_source_line(source_line)
+    >>> my_source_line = lib_classes.SourceLine(line_number=4711, content='   :code:')
+    >>> get_option_key_from_source_line(my_source_line)
     'code'
     """
     key = source_line.content.split(':')[1]
@@ -147,7 +147,8 @@ def get_option_key_from_source_line(source_line: SourceLine) -> str:
 
 def log_and_raise_value_error_if_option_not_in_block(option: str, block: Block) -> None:
     if not is_option_in_block(option, block):
-        s_error = f'Error in File: "{block.source}", option "{option}" not found in block starting with Line: {block.l_source_lines[0].line_number}'    # noqa: E713    # for python 3.12beta
+        s_error = f'Error in File: "{block.source}", option "{option}' \
+                  f'" not found in block starting with Line: {block.l_source_lines[0].line_number}'    # noqa: E713    # for python 3.12beta
         lib_log_utils.log_error(s_error)
         raise ValueError(s_error)