Update calculator-v2.py

Author: codedrunkard

calculator-v2.py

@@ -5,8 +5,8 @@ def preprocess(expression):
     # Replace caret with exponent operator
     expression = expression.replace('^', '**')
 
-    # Replace square symbols like 5² with 5**2
-    expression = re.sub(r'(\d+)²', r'(\1**2)', expression)
+    # Replace square symbols like 5² with 5**2
+    expression = re.sub(r'(\d+)²', r'(\1**2)', expression)
 
     # Replace sqrt(x) with math.sqrt(x)
     expression = re.sub(r'sqrt\(([^)]+)\)', r'math.sqrt(\1)', expression)
@@ -15,12 +15,12 @@ def preprocess(expression):
 
 def is_safe_expression(expr):
     # Only allow numbers, operators, parentheses, and valid keywords
-    return bool(re.match(r'^[\d\s+\-*/().^sqrt²]+$', expr))
+    return bool(re.match(r'^[\d\s+\-*/().^sqrt²]+$', expr))
 
 def calculate_advanced(expression):
     expression = expression.replace(' ', '')  # Remove spaces
     if not is_safe_expression(expression):
-        return "? Invalid input! Only numbers and basic operators (plus ^, sqrt, ²) are allowed."
+        return "? Invalid input! Only numbers and basic operators (plus ^, sqrt, ²) are allowed."
 
     try:
         safe_expr = preprocess(expression)
@@ -34,4 +34,4 @@ def calculate_advanced(expression):
     user_input = input("Enter expression (or 'exit' to quit): ")
     if user_input.lower() == 'exit':
         break
-    print(calculate_advanced(user_input))
+    print(calculate_advanced(user_input))