How to use the easypost.api_key function in easypost

import easypost
from time import gmtime, strftime

easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'

shipment = easypost.Shipment.create(
    to_address={
        'name': "Customer",
        'street1': "8308 Fenway Rd",
        'city': "Bethesda",
        'state': "MD",
        'zip': "20817",
        'country': "US"
    },
    from_address={
        'name': "Sawyer Bateman",
        'company': "EasyPost",
        'street1': "164 Townsend St",
        'city': "San Francisco",
        'state': "CA",

import easypost
easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'

# this address will be verified
address = easypost.Address.create(
    verify=["delivery"],
    street1="118 2 streat",
    street2="FL 4",
    city="San Francisco",
    state="CA",
    zip="94105",
    country="US",
    company="EasyPost",
    phone="415-456-7890"
)

print(address.street1)

import easypost
easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'

# create addresses
to_address = {
    'name': "Sawyer Bateman",
    'street1': "1A Larkspur Cres.",
    'street2': "",
    'city': "St. Albert",
    'state': "AB",
    'zip': "t8n2m4",
    'country': "CA",
    'phone': "780-283-9384"
}

from_address = {
    'name': "Jon Calhoun",
    'street1': "388 Townsend St",

import easypost

easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'

order = easypost.Order.create(
    to_address={
        'company': 'Oakland Dmv Office',
        'name': "Customer",
        'street1': "5300 Claremont Ave",
        'city': "Oakland",
        'state': "CA",
        'zip': "94618",
        'country': 'US',
        'phone': '800-777-0133'
    },
    from_address={
        'name': "EasyPost",
        'company': "EasyPost",
        'street1': "164 Townsend St",

import easypost
easypost.api_key = 'PRODUCTION API KEY'

# Here are two different ways to retrieve your api_keys
api_keys = easypost.User.all_api_keys()
my_keys1 = api_keys.keys

me = easypost.User.retrieve()
my_keys2 = me.api_keys()

# Here is how to retrieve the api_keys of a child user
child = me.children[0]
child_keys = child.api_keys()

import easypost
easypost.api_key = 'PRODUCTION API KEY'

me = easypost.User.retrieve()

child_user = easypost.User.create(
    name='Python All-Things-Testing',
    phone_number='555-555-5555'
)
id = child_user.id

retrieved_user = easypost.User.retrieve(id)

new_name = 'Python All-Things-Tested'
retrieved_user.name = new_name
retrieved_user.save()

updated_user = easypost.User.retrieve(id)

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")

import easypost
easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'

try:
    # this request will raise an error
    address = easypost.Address.create(
        verify_strict=["delivery"],
        street1="UNDELIEVRABLE ST",
        city="San Francisco",
        state="CA",
        zip="94105",
        country="US",
        company="EasyPost",
        phone="415-456-7890"
    )
except easypost.Error as e:
    print(e.http_body)

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import subprocess
import tempfile
import time
import urllib2

import easypost

easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'
easypost.api_base = 'http://localhost:5000/v2'

def process_job(job):

    with tempfile.NamedTemporaryFile() as f:
        try:
            response = urllib2.urlopen(job['url'])
        except urllib2.URLError:
            return False

        f.write(response.read())
        f.flush()

        return print_zpl(f.name)

    #if success:

import easypost
easypost.api_key = 'cueqNZUb3ldeWTNX7MU3Mel8UXtaAMUi'
# easypost.api_base = 'http://localhost:5000/v2'

# addresses
to_address = {
    "name": "Sawyer Bateman",
    "street1": "1A Larkspur Cres.",
    "street2": "",
    "city": "St. Albert",
    "state": "AB",
    "zip": "t8n2m4",
    "country": "CA",
    "phone": "780-283-9384"
}

from_address = {
    "name": "Jon Calhoun",