add minus function

calc.py

@@ -1,25 +1,25 @@
 def main():
     print("Welcome to the Calculator")
-    command = input("Select command: + or *\nType exit if u want exit \n")
+    command = input("Select command: [ + ] [ - ] [ * ] [ / ] \nType exit if u want exit \n")
     match command:
         case "+":
             summ()
-            main()
         case "*":
             multiplication()
-            main()
+        case "minus":
+            minus()
         case "exit":
             exit
         case _:
             print(KeyError("Incorrect"))
             main()
 def summ():
-    print("Enter number to sum, enter space to finish")
+    print("Enter number(s) to sum, enter space to calculate")
     total = 0
     while True:
         num_input = input()
         if num_input == " ":
-            print (total)
+            print (f"Total summ = {total}")
             main()
         try: 
             number = float(num_input)
@@ -27,8 +27,22 @@ def summ():
             print(f"Total summ = {total}")
         except ValueError:
             print("Error, enter correct number")
+def minus():
+    print("Enter number(s) to minus, enter spase to calculate")
+    total = 0
+    while True:
+        num_input = input()
+        if num_input == " ":
+            print(total)
+            main()
+        try:
+            number = float(num_input)
+            total -= number
+            print(f"Total minus = {total}")
+        except ValueError:
+            print("Error, enter correct number")
 def multiplication():
-    print("Enter number to multiplication, enter space to finish")
+    print("Enter number to multiplication, enter space to calculate")
     total = 0
     while True:
         num_input = input()