Uploaded file does not show in S3 - python-3.x

Question

I am using boto3 using multipart upload with TransferConfig:
Every thing seems okay as the program runs without errors:
import threading,boto3,re,os,sys
from boto3.s3.transfer import TransferConfig
#create resource
s3=boto3.resource('s3',
region_name = region,
aws_access_key_id=ACCESS_KEY,
aws_secret_access_key=SECRET_KEY,
aws_session_token=SESSION_TOKEN)
BUCKET_NAME="my_bucket"
# the upload function
def multi_part_upload_with_s3():
# Multipart upload
config = TransferConfig(multipart_threshold=1024*25, max_concurrency=10000,
multipart_chunksize=1024*25, use_threads=True)
#file_path = os.path.dirname(__file__)+'/largefile.pdf'
file_path = "C:/Users/Documents/MyFile.out"
key_path = 'MyDir/MySubDir/'
s3.meta.client.upload_file(file_path, BUCKET_NAME, key_path,
#ExtraArgs={'ACL': 'public-read', 'ContentType':
'text/pdf'},
Config=config, Callback=ProgressPercentage(file_path))
#Not really important, just tells you what percentage of your file has uploaded.
class ProgressPercentage(object):
def __init__(self, filename):
self._filename = filename
self._size = float(os.path.getsize(filename))
self._seen_so_far = 0
self._lock = threading.Lock()
def __call__(self, bytes_amount):
with self._lock:
self._seen_so_far += bytes_amount
percentage = (self._seen_so_far/self._size)*100
sys.stdout.write("\r%s %s/%s (%.2f%%)" % (self._filename,
self._seen_so_far, self._size, percentage))
sys.stdout.flush()
#Now call fucntion
if __name__=='__main__':
multi_part_upload_with_s3()
Output:
C:/Users/Documents/MyFile.out 1295607/1295607.0 (100.00%)
So it appears to run without errors. However, when I look in S3, 'MySubDir' is created, but 'MyFile.out' is not in there. I thought maybe having the max concurrency in S3 was the culprit thinking it would take a while to join it back up, but I've waited for over 4 hours and nothing has shown up. I've also used other files and other uploading approaches and files would show up in 'MySubDir'.

Answer 1

You never specify the destination file name, only the path. Try:
file_path = "C:/Users/Documents/MyFile.out"
key_path = 'MyDir/MySubDir/MyFile.out'
s3.meta.client.upload_file(file_path, BUCKET_NAME, key_path,
#ExtraArgs={'ACL': 'public-read', 'ContentType':
'text/pdf'},
Config=config,Callback=ProgressPercentage(file_path))