すべて削除
CoddyのPythonジャーニー「Fundamentals」セクションの一部 — レッスン 73/77。
チャレンジ
簡単すべての支出をクリアするオプション（4）を処理します。
支出リストをクリアした後、次のように出力します：
All expenses cleared.自分で試してみよう
print("Welcome to the Daily Expense Tracker!")
# Display menu once
print("\nMenu:")
print("1. Add a new expense")
print("2. View all expenses")
print("3. Calculate total and average expense")
print("4. Clear all expenses")
print("5. Exit")
# Initialize an empty list to store expenses
expenses = []
while True:
# Get user choice
choice = input()
if choice == "1":
# Add a new expense
amount = float(input())
expenses.append(amount)
print("Expense added successfully!")
elif choice == "2":
# View all expenses
if len(expenses) == 0:
print("No expenses recorded yet.")
else:
print("Your expenses:")
for i in range(len(expenses)):
print(f"{i + 1}. {expenses[i]}")
elif choice == "3":
# Calculate total and average expense
if len(expenses) == 0:
print("No expenses recorded yet.")
else:
total = 0
for expense in expenses:
total += expense
average = total / len(expenses)
print(f"Total expense: {total}")
print(f"Average expense: {average}")
elif choice == "5":
# Exit the program
print("Exiting the Daily Expense Tracker. Goodbye!")
break