exercise 3 complete

Author: Alex-Jamshidi

Sprint 5 Prep Exercises/exercise_2.py

@@ -5,7 +5,6 @@ def double(number):
 
 # Read the above code and write down what the bug is. How would you fix it?
 
-# Potential bug: code says double and it is multiplying by 3
-# We can't be sure this is a bug without knowing more information about intent of the developer or requirement of the user.
+# Potential bug: Code says double and it is multiplying by 3
 
-# Assuming a bug; it could be fixed by changing the name of the function to triple, or the integer to 2.
+# It could be fixed by changing the name of the function to triple, or the integer to 2.

Sprint 5 Prep Exercises/exercise_3.py

@@ -0,0 +1,30 @@
+def open_account(balances: dict[str, int], name: str, amount: int) -> None:
+    balances[name] = amount
+
+def sum_balances(accounts: dict[str, int]) -> int:
+    total = 0
+    for name, pence in accounts.items():
+        print(f"{name} had balance {pence}")
+        total += pence
+    return total
+
+def format_pence_as_string(total_pence: int) -> str:
+    if total_pence < 100:
+        return f"{total_pence}p"
+    pounds = int(total_pence / 100)
+    pence = total_pence % 100
+    return f"£{pounds}.{pence:02d}"
+
+balances = {
+    "Sima": 700,
+    "Linn": 545,
+    "Georg": 831,
+}
+
+open_account(balances, "Tobi", 913)
+open_account(balances, "Olya", 713)
+
+total_pence = sum_balances(balances)
+total_string = format_pence_as_string(total_pence)
+
+print(f"The bank accounts total {total_string}")