Buy postage with EasyPost and Python

easypost_buy.py

import easypost

easypost.api_key = "ek_0HbTD15HeT6RFTwCKoUQ7rrB2NzMZ"
easypost.Postage.buy({
    "tracking": True,
    "insurance": 135,
    "weight": 1.1,
    "height": 12,
    "width": 14,
    "length": 7,
    "to": {
        "name": "Reed Rothchild",
        "street1": "101 California St",
        "street2": "Suite 1290",
        "city": "San Francisco",
        "state": "CA",
        "zip": "94111"
    },
    "from": {
        "name": "Dirk Diggler",
        "street1": "300 Granelli Ave",
        "city": "Half Moon Bay",
        "state": "CA",
        "zip": "94019"
    },
    # Optionally
    "description": "Postage for Customer 2012389237561",
    "external_id": "31224974"
    })