Calculates Delivery Time for Standard Shipping Through USPS

usps_time_calc.py

# Extends USPS api class to calculate time for Standard delivery from zip to zzip

from lxml import etree

def get_time(origin_zip, dest_zip):
    usps = USPSApi(USPS_API_USER, test=True)

    #usps.urls['calc'] = 'PriorityMail&XML={xml}'

    usps.urls['calc'] = 'StandardB&XML={xml}'

    
    # extends USPS class to search by Zipcode



    class Zip(object):

        def __init__(self, zipcode,
                     zipcode_ext=''):

            self.zipcode = zipcode
            self.zipcode_ext = zipcode_ext

        def add_to_xml(self, root, prefix='To', validate=False):

            zipcode = etree.SubElement(root, prefix + 'Zip5')
            zipcode.text = self.zipcode

            zipcode_ext = etree.SubElement(root, prefix + 'Zip4')
            zipcode_ext.text = self.zipcode_ext


    class TimeCalc(object):

        def __init__(self, origin, destination):
            #StandardBRequest
            xml = etree.Element('StandardBRequest', {'USERID': usps.api_user_id})
            #xml = etree.Element('PriorityMailRequest', {'USERID': usps.api_user_id})
            _origin = etree.SubElement(xml, 'OriginZip')
            _origin.text = str(origin)

            _destination = etree.SubElement(xml, 'DestinationZip')
            _destination.text = str(destination)

            #print(etree.tostring(xml, pretty_print=True))

            self.result = usps.send_request('calc', xml)




    def time_calc(self, *args, **kwargs):
        return TimeCalc(self, *args, **kwargs)

    usps.time_calc = time_calc

    label = usps.time_calc(origin_zip, dest_zip)
    return label.result

def get_time_val(dest_zip):
    val = get_time(dest_zip)
    return val["StandardBResponse"]['Days']