Content Range header not returned when requested range is 'bytes=0-'

[nicoandra]

Had some trouble using this library with smart_open

See the snippet below, where I hit both a real S3 implementation and the S3rver implementation:

## Install dependencies:
pip install smart-open

Code

from boto3.session import Session
from smart_open import open

def create_s3_client_real(): 
    client = Session(
        aws_access_key_id="KEY", 
        aws_secret_access_key="SECRET"
    ).client( "s3", )
    return client

def create_s3_client_s3rver(): 
    client = Session(
        aws_access_key_id="S3RVER", 
        aws_secret_access_key="S3RVER"
    ).client("s3", endpoint_url="http://localhost:4569")
    return client

real = create_s3_client_real()
s3rver = create_s3_client_s3rver()

print(real.get_object(Bucket="bucket", Key="object.txt", Range="bytes=0-")) 
print(" *********************** ") 
print(s3rver.get_object(Bucket="bucket", Key="object.txt", Range="bytes=0-"))

The problem arises because the check if(options.start || options.end) evaluates to false when options.start = 0; however it is a valid range.

A Pull Request has been submitted: #753

[kherock]

Closed via #755 and released in v3.7.1!