import json

def lambda_handler(event, context):
    # TODO implement
    now = datetime.datetime.now()
    cur_day = "{}{}{}".format(now.strftime('%d'),now.strftime('%m'),now.year)
    print(cur_day)
    my_contents = get_data_from_s3_file('myBucket', 'myFile')
    return {
        'statusCode': 200,
        'body': json.dumps('Hello from Lambda!')
    }

def get_data_from_s3_file(bucket, my_file):
    """Read the contents of the file as a string and split by lines"""
    my_data = s3.get_object(Bucket=bucket, Key=my_file)
    my_text = my_data['Body'].read().decode('utf-8').split('n')

    return my_text

pip install python-lambda-local
python-lambda-local -l lib/ -f lambda_handler -t 5 pythonLambdaLocalTest.py event.json

raise EndpointConnectionError(endpoint_url=request.url, error=e)
botocore.exceptions.EndpointConnectionError: Could not connect to the
endpoint URL: "https://myBucket/myfile"

sam local start-api -t pythonLambdaLocalTest.yaml

2019-01-21 16:56:30 Found credentials in shared credentials file: ~/.aws/credentials
Error: Template does not have any APIs connected to Lambda functions