lambda_function.txt

import json
import boto3
from time import gmtime, strftime

dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('BinaryCalculator')
now = strftime("%a, %d %b %Y %H:%M:%S +0000", gmtime())

def lambda_handler(event, context):
    userInputNum = str(event['userInputNum'])
    userInputBase = int(event['userInputBase'])
    result = ''

    decimalConversion = 0
    userInputNum = userInputNum[::-1] 
    
    for i, digit in enumerate(userInputNum):
        decimalConversion += int(digit) * (2 ** i)

    result = ''
    while decimalConversion > 0:
        remainder = decimalConversion % userInputBase
        result = str(remainder) + result
        decimalConversion //= userInputBase

    response = table.put_item(
        Item={
            'ID': result,
            'LatestGreetingTime':now
            })

    return {
    'statusCode': 200,
    'body': json.dumps('Your result is ' + result)
    }