S3.Client.
download_file
(Bucket, Key, Filename, ExtraArgs=None, Callback=None, Config=None)¶Download an S3 object to a file.
Usage:
import boto3
s3 = boto3.resource('s3')
s3.meta.client.download_file('mybucket', 'hello.txt', '/tmp/hello.txt')
Similar behavior as S3Transfer's download_file() method, except that parameters are capitalized. Detailed examples can be found at S3Transfer's Usage.