BUG: excessive download requests

[jklenzing]

Description

Addresses #172

When downloading numerous small files in close proximity to the data servers, sometimes the default code will return an excessive server request error. This adds a brief pause after each download to avoid erroring.

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

Running unit tests at locations where this issue arises.

Test Configuration

• Operating system: Monterrey
• Version number: python 3.10
• Physically near the servers

Checklist:

• Make sure you are merging into the develop (not main) branch
• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• Add a note to CHANGELOG.md, summarizing the changes
• Update zenodo.json file for new code contributors

[jklenzing]

0.2 sec works for me on campus, 0.1 sec is too short.