Initial commit - fix problems & refactor code

core/exceptions.py

@@ -0,0 +1,31 @@
+"""Exception classes for Lisp interpreter."""
+
+
+class error(Exception):
+    """Base exception for all Lisp-related errors."""
+
+    pass
+
+
+class syntaxError(error):
+    """Raised when there is a syntax error in the Lisp code."""
+
+    pass
+
+
+class runtimeError(error):
+    """Raised when there is a runtime error during evaluation."""
+
+    pass
+
+
+class valueError(error):
+    """Raised when there is an invalid value."""
+
+    pass
+
+
+class typeError(error):
+    """Raised when there is a type error during evaluation."""
+
+    pass