Upload data to S3 bucket without saving it to a disk

Question

Ther is the boto3 method upload_file(Filename='path') that uses the Filename parameter to read a file from a disk and upload it to a bucket. Is it possible to upload data without saving it to a disk?

Answer 1

Save text file:

obj = 'some string'
bucket = 'my-bucket'
key = 'prefix/filename.txt'

boto3.client('s3').put_object(Body=obj, Bucket=bucket, Key=key)

Save csv file from pandas dataframe:

df = my-dataframe
bucket = 'my-bucket'
key = 'prefix/filename.csv'

csv_buffer = io.StringIO()
df.to_csv(csv_buffer)
boto3.client('s3').put_object(Body=csv_buffer.getvalue(), Bucket=bucket, Key=key)