Boilerplate Code Generation For File Tasks

What it does

The user leverages the chat agent to quickly produce foundational code snippets for routine technical tasks, such as moving and manipulating files in cloud storage. This approach allows them to bypass writing basic logic from scratch, saving time on mundane implementation details while retaining control over final refinements.

Example output

import boto3
import os

def download_rename_upload():
    """
    Downloads a file from my-raw-data-bucket at path uploads/report_2023.csv,
    renames the local temporary file to processed_report.csv, and uploads it
    to my-archived-data-bucket at path archive/2024/processed_report.csv.

    Raises an exception if the source object does not exist.
    """
    s3_client = boto3.client('s3')

    source_bucket = 'my-raw-data-bucket'
    source_key = 'uploads/report_2023.csv'
    temp_local_file = '/tmp/temp_report.csv'
    renamed_local_file = 'processed_report.csv'
    dest_bucket = 'my-archived-data-bucket'
    dest_key = 'archive/2024/processed_report.csv'

    # Check if the source object exists
    try:
        s3_client.head_object(Bucket=source_bucket, Key=source_key)
    except s3_client.exceptions.ClientError as e:
        error_code = e.response['Error']['Code']
        if error_code == '404' or error_code == 'NoSuchKey':
            raise FileNotFoundError(
                f"The source object '{source_key}' does not exist in bucket '{source_bucket}'."
            ) from e
        else:
            raise

    # Download the file to a temporary location
    s3_client.download_file(source_bucket, source_key, temp_local_file)

    # Rename the local temporary file to processed_report.csv
    os.rename(temp_local_file, renamed_local_file)

    # Upload the renamed file to the destination bucket
[... truncated, full run would continue]

## Example prompt

Generate Python code using the boto3 library to handle file operations in AWS S3.
Specifically, I need a function that downloads a file from [source_bucket_name] at path [source_key].
Then, rename the local temporary file to [new_filename] and upload it to [destination_bucket_name] at path [destination_key].
Include error handling for cases where the source object does not exist.
Ensure the code uses standard libraries only except for boto3 and os.

## How to build it

Open your chat agent (ChatGPT, Claude, or Copilot) and paste the example prompt. Adjust the inputs in the curly braces and run.