Fix macros, add string I/O helpers

1 files changed, 1 insertions, 1 deletions

diff --git a/src/charmem.py b/src/charmem.py
index 9b19864..551ba85 100644
--- a/src/charmem.py
+++ b/src/charmem.py
@@ -43,7 +43,7 @@ def string_to_byte(input_string: str):
 
     # Check if the string contains only '0' or '1'
     if not all(c in '01' for c in binary_string):
-        raise ValueError("Input string must contain only spaces and '#' characters.")
+        raise ValueError("Input string must contain only spaces and '█' characters.")
 
     # Convert the binary string to an unsigned integer byte
     return int(binary_string[::-1], 2)