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  • Encode query with Python

        Encode query with Python

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        Contents

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            1 Summary

            2 Description

            3 Sample program

            4 Link

        Summary

        Result may not be able to be retrieved normally, if query including non alphanumeric character is used with Python.

        Description

        You have to encode your query. If qPath is a query to be encoded, please do as follows.

        import urllib

        urllib.urlencode({'<parameter_name>':qPath,})

        Sample program

        This tutorial introduces a example that retrieve entries which feature-key is 'rRNA', qualifier name is 'product' and has '16s ribosomal RNA' in qualifier value with searchByXMLPath of ARSA.

        Download this program

        import socket

        import urllib

        #set server

        host = "xml.nig.ac.jp"

        port =  80

        #set API server

        url = "/rest/Invoke"

        qPath = "/ENTRY/DDBJ/feature-table/feature/f_key=='rRNA' AND "

        qPath = qPath + "(/ENTRY/DDBJ/feature-table/feature{/f_key=='rRNA' AND "

        qPath = qPath + "/f_quals/qualifier{/q_name=='product' AND /q_value='16S ribosomal RNA'}}) "

        rPath = "/ENTRY/DDBJ/primary-accession,/ENTRY/DDBJ/definition"

        offset = "1";

        count = "10";

        query = urllib.urlencode({'queryPath':qPath,'returnPath':rPath,'offset':offset,'count':count});

        #set parameter

        query = "service=ARSA&method=searchByXMLPath&"+ query;

        #make connection

        sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

        try:

        sock.connect((host, port))

        sock.send("POST " + url + " HTTP/1.0\n")

        sock.send("Content-Type: application/x-www-form-urlencoded\n")

        sock.send("User-Agent: python/socket\n")

        sock.send("Content-Length:" + `len(query)` + "\n\n")

        sock.send(query)

        except socket.error, e:

        print 'Error: %s' % e

        while 1:

        rcvmsg = sock.recv(1024)

        print rcvmsg,

        if rcvmsg == :

        break

        sock.close

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  • 原文地址:https://www.cnblogs.com/lexus/p/2405397.html
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