Python script to upload file to S3.

upload_to_s3.py

import boto3
import sys
import os

def upload(file_name, bucket_name, key=None):
	if(key is None):
		key = os.path.basename(file_name)
	
	client = boto3.client('s3')
	try:
		client.upload_file(file_name, bucket_name, key)
		print("Upload Success!")
	except:
		print("Failed to upload")		

arguments = sys.argv

if(len(arguments) in {3,4}):
	file_name = arguments[1]
	bucket_name = arguments[2]
	key = arguments[3] if len(arguments)==4 else None
	upload(file_name, bucket_name, key)
else:
	print("Not enough parameters")