Python

My Python reference page

I don’t spend as much time building actual large projects in Python any more (though I was paid to write Python for a few years in my early career). These days it’s mostly just for random glue scripts on a variety of systems.

Quick s3 client §

Setup an S3 client, with credentials loaded from the env. You actually don’t need to explicitly list the creds, so long as you set AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY. Magic ✨

import boto3

s3 = boto3.resource('s3')

for bucket in s3.buckets.all():
    print(bucket.name)

A generator to yield chunks of a fixed size §

def chunks(lst, n):
    """Yield successive n-sized chunks from lst."""
    for i in range(0, len(lst), n):
        yield lst[i:i + n]

From StackOverflow