requests.post in python returns null/empty in php when sending json data?

Question

I am attempting to POST from python to php using requests.post however $_POST returns NULL or empty in php.

My PHP should output the request so I can loop through it.

Python

# Import JSON data into POST
def create():
    #print(json.dumps(thisisjson, indent=4))
    #print(thisisjson)
    headers = {'Content-Type': 'application/json', 'Accept':'application/json'}
    r = requests.post(url='https://URL/import.php', data=json.dumps(thisisjson), verify=True, headers=headers)
    print(r.status_code)
    print(r.headers)
    print(r.text)


create() 

PHP

<?php var_dump(json_decode($_POST, true)); ?>

Sample data

[
  {
    "Work_order": 123
  },
  {
    "Work_order": 1234
  },
  {
    "Work_order": 12345
  }
]