Encode query with Python

Encode query with Python - WABI

    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