title: Multipart POST using python requests
body: <p>Im making a multipart POST using the python package requests.
  Im using xlrd to change some values in an Excel file save it then send that up in a multipart POST.
  This working fine when I run it locally on my mac but when I put the code on a remote machine and make the same request the body content type is blank where as locally the body content type is application/vnd.ms-excel. So my question is, is there a way enforce the content type using python requests so that in this case the body content type is application/vnd.ms-excel.
  Sorry cant post up any code as I don't have it on this machine.  </p>