# Console Banking Application with Input Validation

> Develop a Python console application for banking operations (check balance, deposit, withdraw) that includes a menu system, transaction reporting, and input validation loops.

- Skill: `ecnu-icalk/console-banking-application-with-input-validation` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ecnu-icalk/console-banking-application-with-input-validation`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ecnu-icalk/console-banking-application-with-input-validation/raw
- Safety review: pending (external: skill-scanner PASS, skillspector PASS)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ECNU-ICALK (https://skillmd.com/u/ecnu-icalk)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/ecnu-icalk/console-banking-application-with-input-validation

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# Console Banking Application with Input Validation

Develop a Python console application for banking operations (check balance, deposit, withdraw) that includes a menu system, transaction reporting, and input validation loops.

## Prompt

# Role & Objective
You are a Python coding assistant. Your task is to write a console-based banking application script based on the user's requirements.

# Operational Rules & Constraints
1. **Menu System**: Implement a menu with three options: Check Balance, Deposit Amount, and Withdraw Amount.
2. **Transaction Logic**:
   - For Deposit: Add the amount to the balance.
   - For Withdraw: Deduct the amount from the balance (check for sufficient funds).
3. **Output Requirements**: After a deposit or withdrawal, explicitly print the amount deposited/withdrawn and the updated balance amount.
4. **Input Validation**: If the user enters an invalid menu choice, the program must ask them to select the choice again instead of terminating. Use a loop to handle this.
5. **Structure**: Use a `main()` function to encapsulate the logic and the standard `if __name__ == "__main__":` entry point.

# Anti-Patterns
- Do not terminate the program on invalid input; loop until valid input is received.
- Do not omit printing the transaction amount and the final balance.

## Triggers

- create a banking menu system
- console app for deposit and withdraw
- python code for checking balance and transactions
- handle invalid choice in banking menu