How to use the easypost.Tracker.create function in easypost

def test_tracker_interactions(per_run_unique):
    # create a pseudo-random tracking code so that we can run multiple instances of this test in parallel
    tracking_code = 'EP{0}'.format(per_run_unique)

    # Create a tracker and then retrieve it. We assert on created and retrieved tracker's values.
    tracker = easypost.Tracker.create(
        tracking_code=tracking_code,
        carrier="usps",
        options=dict(
            full_test_tracker=True,
        )
    )
    assert tracker.id                   # This is random

    # retrieve tracker by id
    tracker2 = easypost.Tracker.retrieve(tracker.id)

    assert tracker2.id == tracker.id                  # Should be the same as above

    # retrieve all trackers by tracking_code
    trackers = easypost.Tracker.all(tracking_code=tracking_code)

def test_tracker_values():

    for code, status in (
        ('EZ1000000001', 'pre_transit'),
        ('EZ2000000002', 'in_transit'),
        ('EZ3000000003', 'out_for_delivery'),
        ('EZ4000000004', 'delivered'),
        ('EZ5000000005', 'return_to_sender'),
        ('EZ6000000006', 'failure'),
        ('EZ7000000007', 'unknown'),
    ):
        tracker = easypost.Tracker.create(tracking_code=code)
        assert tracker.status == status
        assert tracker.tracking_details != []
        if status == 'delivered':
            assert tracker.signed_by == 'John Tester'

)
    assert tracker.id                   # This is random

    # retrieve tracker by id
    tracker2 = easypost.Tracker.retrieve(tracker.id)

    assert tracker2.id == tracker.id                  # Should be the same as above

    # retrieve all trackers by tracking_code
    trackers = easypost.Tracker.all(tracking_code=tracking_code)

    assert len(trackers["trackers"])
    assert trackers["trackers"][0].id == tracker.id == tracker2.id   # Should be the same as the ids above

    # create another test tracker
    tracker3 = easypost.Tracker.create(
        tracking_code=tracking_code,
        carrier="USPS",
        options=dict(
            full_test_tracker=True,
        )
    )

    assert tracker3.id

    # retrieve all created since 'tracker'
    trackers2 = easypost.Tracker.all(after_id=tracker.id, tracking_code=tracking_code)

    assert len(trackers2["trackers"]) == 1             # Should be 1
    assert trackers2["has_more"] is False              # Should be false
    assert trackers2["trackers"][0].id == tracker3.id  # Should be the same as the id for tracker3

print(tracker.id)                   # This is random

# retrieve tracker by id
tracker2 = easypost.Tracker.retrieve(tracker.id)

print(tracker2.id)                  # Should be the same as above

# retrieve all trackers by tracking_code
trackers = easypost.Tracker.all(tracking_code="EZ2000000002")

print(len(trackers["trackers"]))    # Should be 30
print(trackers["has_more"])         # Should be true, unless the len() isn't 30
print(trackers["trackers"][0].id)   # Should be the same as the ids above

# create another test tracker
tracker3 = easypost.Tracker.create(
    tracking_code="EZ2000000002",
    carrier="USPS"
)

print(tracker3.id)

# retrieve all created since 'tracker'
trackers2 = easypost.Tracker.all(after_id=tracker.id)

print(len(trackers2["trackers"]))   # Should be 1
print(trackers2["has_more"])        # Should be false
print(trackers2["trackers"][0].id)  # Should be the same as the id for tracker3

import easypost
easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'

# create test tracker
tracker = easypost.Tracker.create(
    tracking_code="EZ2000000002",
    carrier="USPS"
)
print(tracker.id)                   # This is random

# retrieve tracker by id
tracker2 = easypost.Tracker.retrieve(tracker.id)

print(tracker2.id)                  # Should be the same as above

# retrieve all trackers by tracking_code
trackers = easypost.Tracker.all(tracking_code="EZ2000000002")

print(len(trackers["trackers"]))    # Should be 30
print(trackers["has_more"])         # Should be true, unless the len() isn't 30
print(trackers["trackers"][0].id)   # Should be the same as the ids above