[Python] Why am I getting a "string indices must be integers, not 'str'" error? [closed]

I have a few things I am working on still for my program.

**1 - I am trying to get my search to display the list of expenses by category or amount range.

2 - I am trying to figure out how to get my view to only display categories with the total amount spent on that category.

3 - Not required, but it would be nice to display as currency $100.00 instead of 100.**

With Issue #1, right now I am getting the following error when searching by category or amount range.

*Traceback (most recent call last):

File "c:\Personal Expense\dictionary_expense.py", line 116, in <module>

main()

# # ~~~~^^

File "c:\Personal Expense\dictionary_expense.py", line 107, in main

search_expenses(expenses)

# # ~~~~~~~~~~~~~~~^^^^^^^^^^

File "c:\Personal Expense\dictionary_expense.py", line 67, in search_expenses

results = [e for e in expenses if e["category"] == search_term]

# # ~^^^^^^^^^^^^

TypeError: string indices must be integers, not 'str'*


import json
import uuid

# Load expense text file if it exists.
def load_expenses(filename="expenses.txt"):
try:
with open(filename, 'r') as f:
return json.load(f)
except FileNotFoundError:
return {}

# Save expenses to text file.
def save_expenses(expenses, filename="expenses.txt"):
with open(filename, 'w') as f:
json.dump(expenses, f, indent=4)

# Add expense item
def add_expense(expenses):
category = input("Enter category: ")
description = input("Enter description: ")
amount = int(input("Enter amount: "))
expense_id = str(uuid.uuid4())
expenses[expense_id] = {"category": category, "description": description, "amount": amount}
print("Expense added.")

# Remove item from expenses by ID
def remove_expense(expenses):
expense_id = input("Enter expense ID to remove: ")
if expense_id in expenses:
del expenses[expense_id]
print("Expense item removed.")
else:
print("Expense item ID not found.")

# Update expense item
def update_expense(expenses):
expense_id = input("Enter expense ID to update: ")
if expense_id in expenses:
print("Enter new values, or leave blank to keep current:")
category = input(f"Category ({expenses[expense_id]['category']}): ")
description = input(f"Description ({expenses[expense_id]['description']}): ")
amount_str = input(f"Amount ({expenses[expense_id]['amount']}): ")

if category:
expenses[expense_id]["category"] = category
if description:
expenses[expense_id]["description"] = description
if amount_str:
expenses[expense_id]["amount"] = float(amount_str)
print("Expense item updated.")
else:
print("Expense item ID not found.")

# View expenses
def view_expenses(expenses):
if expenses:
for expense_id, details in expenses.items():
print(f"ID: {expense_id}, Category: {details['category']}, Description: {details['description']}, Amount: {details['amount']}")
else:
print("No expenses found.")

# Search for expenses by category or amount
def search_expenses(expenses):
search_type = input("Search by (category/amount): ").lower()
if search_type == "category":
search_term = input("Enter category to search: ")
results = [e for e in expenses if e["category"] == search_term]
elif search_type == "amount":
min_amount = int(input("Enter minimum amount: "))
max_amount = int(input("Enter maximum amount: "))
results = [e for e in expenses if min_amount <= e["amount"] <= max_amount]
else:
print("Invalid search type.")
return
if results:
print("Search results:")
for i, expense in enumerate(results):
print(f"{i+1}. Category: {expense['category']}, Amount: {expense['amount']:.2f}")
else:
print("No matching expenses found.")

# Commands for expense report menu
def main():
expenses = load_expenses()

while True:
print("\nExpense Tracker Menu:")
print("1. Add expense item")
print("2. Remove expense item")
print("3. Update expense item")
print("4. View expense items")
print("5. Search expense item")
print("6. Save and Exit")

choice = input("Enter your choice: ")

if choice == '1':
add_expense(expenses)
elif choice == '2':
remove_expense(expenses)
elif choice == '3':
update_expense(expenses)
elif choice == '4':
view_expenses(expenses)
elif choice == '5':
search_expenses(expenses)
elif choice == '6':
save_expenses(expenses)
print("Expenses saved. Exiting.")
break
else:
print("Invalid choice. Please try again.")

if __name__ == "__main__":
main()

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