Lite fiks i oppgave 3

stat_kalk.py

@@ -10,8 +10,11 @@ ESP meny:
     4. List ut verdiene
     5. Avslutt
 Ditt valg:""")
-    i = int(input())
-    if i not in range(1,6): raise ValueError()
+    try:
+        i = int(input())
+    except ValueError:
+        return 0
+    if i not in range(1,6): return 0
     return i
 
 def read_values(values):
@@ -23,7 +26,7 @@ def read_values(values):
             break
     return values
 
-def print_statistics(values):
+def get_statistics(values):
     return(f'Antall verdier: {len(values)}, gjennomsnitt: {stat.mean(values):.2f}, standardavvik: {stat.std(values):.2f}')
 
 def main():
@@ -31,6 +34,8 @@ def main():
     values = []
     while True:
         match choose_action():
+            case 0:
+                print('Ikke et gyldig valg!')
             case 1:
                 # Write numbers
                 read_values(values)
@@ -39,7 +44,7 @@ def main():
             case 3:
                 #mean, std
                 try:
-                    print(print_statistics(values))
+                    print(get_statistics(values))
                 except ZeroDivisionError:
                     print('Tom liste!')
             case 4: