Making a POST call instead of GET using urllib2

Question

There s a lot of stuff out there on urllib2 and POST calls  but I m stuck on a problem   I m trying to do a simple POST call to a service   url    http   myserver post service  data   urllib urlencode   name     joe                             age      10    content   urllib2 urlopen url url  data data  read   print content   I can see the server logs and it says that I m doing GET calls  when I m sending the data  argument to urlopen   The library is raising an 404 error  not found   which is correct for a GET call  POST calls are processed well  I m also trying with a POST within a HTML form

User · Answer

The requests module may ease your pain   url    http   myserver post service  data   dict name  joe   age  10    r   requests post url  data data  allow redirects True  print r content

User · Answer

it should be sending a POST if you provide a data parameter  like you are doing    from the docs   the HTTP request will be a POST instead of a GET when the data parameter is provided   so   add some debug output to see what s up from the client side   you can modify your code to this and try again   import urllib import urllib2  url    http   myserver post service  opener   urllib2 build opener urllib2 HTTPHandler debuglevel 1   data   urllib urlencode   name     joe                             age      10    content   opener open url  data data  read

User · Answer

Try this instead   url    http   myserver post service  data   urllib urlencode   name     joe                             age      10    req   urllib2 Request url url data data  content   urllib2 urlopen req  read   print content

User · Answer

Have a read of the urllib Missing Manual  Pulled from there is the following simple example of a POST request   url    http   myserver post service  data   urllib urlencode   name     joe    age      10    req   urllib2 Request url  data  response   urllib2 urlopen req  print response read     As suggested by  Michael Kent do consider requests  it s great   EDIT  This said  I do not know why passing data to urlopen   does not result in a POST request  It should  I suspect your server is redirecting  or misbehaving

User · Answer

url  https   myserver post service  data  name      joe  data  age      20  data encoded   urllib2 urlencode data  print urllib2 urlopen url         data encoded  read     May be this can help

User · Answer

This may have been answered before  Python URLLib   URLLib2 POST   Your server is likely performing a 302 redirect from http   myserver post service to http   myserver post service   When the 302 redirect is performed  the request changes from POST to GET  see Issue 1401   Try changing url to http   myserver post service

User · Answer

Do it in stages  and modify the object  like this     make a string with the request type in it  method    POST    create a handler  you can specify different handlers here  file uploads etc    but we go for the default handler   urllib2 HTTPHandler     create an openerdirector instance opener   urllib2 build opener handler    build a request data   urllib urlencode dictionary of POST fields or None  request   urllib2 Request url  data data    add any other information you want request add header  Content-Type   application json     overload the get method function with a small anonymous function    request get method   lambda  method   try it  don t forget to catch the result try      connection   opener open request  except urllib2 HTTPError e      connection   e    check  Substitute with appropriate HTTP code  if connection code    200      data   connection read   else        handle the error case  connection read   will still contain data       if any was returned  but it probably won t be of any use   This way allows you to extend to making PUT  DELETE  HEAD and OPTIONS requests too  simply by substituting the value of method or even wrapping it up in a function  Depending on what you re trying to do  you may also need a different HTTP handler  e g  for multi file upload

[python] Making a POST call instead of GET using urllib2

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