Example of POST vpz/input in Python language

For the simulator ‘wwdm.vpz’ whose Id is 266, enter the Python code/instructions in a Python interpreter.

Example illustrating :

• modifying begin,

• modifying duration,

• modifying some parameters by ‘cname.pname’,

• ‘compactlist’ as style of presentation,

• ‘json’ as format,

• values of type cname.pname as ‘parselect’ :

  value ‘cond_wwdm.A’ to select the parameter named ‘A’ of the condition named ‘cond_wwdm’.

  value ‘cond_wwdm.B’ to select the parameter named ‘B’ of the condition named ‘cond_wwdm’.

  value ‘cond_wwdm.Eb’ to select the parameter named ‘Eb’ of the condition named ‘cond_wwdm’.

  value ‘cond_wwdm.TI’ to select the parameter named ‘TI’ of the condition named ‘cond_wwdm’.

• with ‘application/json’ as ‘Content-Type’

  Memo

  # -*- coding: utf-8 -*-
  """erecord_cmn.utils.using.send_post_and_receive
  
  Methods that may be used by a user calling the erecord web services from python
  
  """
  
  import pycurl
  import io
  import json
  
  def send_post_and_receive(url, inputdata):
      """Send POST request and return response datas"""
  #
      buffer = io.BytesIO()
      c = pycurl.Curl()
      c.setopt(c.POST, 1)
      c.setopt(c.HTTPHEADER, ['Content-Type: application/json'])
      c.setopt(c.URL, url)
      #c.setopt(c.FOLLOWLOCATION, True)
      json_inputdata = json.dumps( inputdata)
      c.setopt(c.POSTFIELDS, json_inputdata)
      c.setopt(c.WRITEFUNCTION, buffer.write)
      c.perform()
      buffer_str = buffer.getvalue()
      buffer.close()
      buffer_str = buffer_str.decode("utf8")
      responsedata = json.loads(buffer_str)
      return responsedata
  #
  
  

  # Python code :
  
  from __future__ import print_function # python 2.7 version case
  
  #######################
  # request and response
  #######################
  
  inputdata = {"vpz":266, "mode":"compactlist", "format":"json"}
  inputdata["duration"] = 6
  inputdata["begin"] = 2453982.0
  
  # some parameters modification with 'cname.pname'
  inputdata["cond_wwdm.A"] = 0.0064
  inputdata["cond_wwdm.Eb"] = 1.86
  
  inputdata["parselect"] = ["cond_wwdm.A", "cond_wwdm.B", "cond_wwdm.Eb",
                            "cond_wwdm.TI"]
  
  responsedata = send_post_and_receive(
      url="http://erecord.toulouse.inra.fr:8000/vpz/input/",
      inputdata=inputdata)
  
  responsedata
  keys = responsedata.keys()
  keys
  
  ##############################################################
  # responsedata in case of 'compactlist' style of presentation 
  ##############################################################
  
  # duration in 'compactlist' style of presentation
  if "duration" in keys :
      duration_value = responsedata['duration']
      print("duration value : ", duration_value)
  
  # begin in 'compactlist' style of presentation
  if "begin" in keys :
      begin_value = responsedata['begin']
      print("begin value : ", begin_value)
  
  # parameters in 'compactlist' style of presentation
  for par_selection_name in ('cond_wwdm.B',
                             'cond_wwdm.Eb',
                             'cond_wwdm.TI',
                             'cond_wwdm.A'):
      if par_selection_name in keys :
          par_value= json.loads(responsedata[par_selection_name])
          print("parameter selection_name and value :", par_selection_name, par_value)
  
  # conditions identity in 'compactlist' style of presentation
  if "conds" in keys :
      conds = responsedata['conds']
      for cond_selection_name in conds :
          print("condition selection_name : ", cond_selection_name)
  
  # views identity in 'compactlist' style of presentation
  if "views" in keys :
      views = responsedata['views']
      for view_selection_name in views :
          print("view selection_name : ", view_selection_name)
  
  # output datas identity in 'compactlist' style of presentation
  if "outs" in keys :
      outs = responsedata['outs']
      for out_selection_name in outs :
          print("output data selection_name : ", out_selection_name)
  
  pass