[Python] How to access model method in enumerate of list in Python?

I'm new to python and I've managed to populate a list with instances of my model.

# requisition.py

from pydantic import BaseModel
from app.schemas.job_information import JobInformation

class Requisition(BaseModel):
# Base fields (common between internal and external)
index: int = 0
contest_number: int = 0
open_date: str = None
close_date: str = ""
job_information: JobInformation = None

def set_index(self, index):
self.index = index

def set_contest_number(self, contest_number):
self.contest_number = contest_number

def set_open_date(self, open_date):
self.open_date = open_date

def set_close_date(self, close_date):
self.close_date = close_date

def set_job_information(self, job_information):
self.job_information = job_information


Then in my main.py

@router.get("/")
async def get_sourcing_requests():
requisitions = []
pageindex = 1
pagecount, reqs = get_sourcing_requests_by_page_index(pageindex)

requisitions.append(reqs)

while pageindex < pagecount:
pageindex += 1
pagecount, reqs = get_sourcing_requests_by_page_index(pageindex)
requisitions.append(reqs)

for i, req in enumerate(requisitions):
req.set_index(int(i))

return requisitions


But I keep getting the error

AttributeError: 'list' object has no attribute 'set_index'
​

I'm guessing req is considered a list object instead of a Requisition object but not really sure.

Appreciate any help.

Using Python 3.13.3.

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