[Python] How to make python read file that user uploaded from user in android or iphone?

I'm trying to make a simple script where it reads an excel file and reads a specific column from it. as it is now, it reads a specific file, but I want that it has some integration with whatsapp. So, basically it will send a "welcome message" to the user then the user will be requested to upload a file. It has to be an excel kind of file. I've looked over internet for something like this, but I didn't find nothing. Here is how I am doing this:

from datetime import datetime
import pandas as pd
from dateutil import parser
import pywhatkit
data_hoje = datetime.today()
pywhatkit.sendwhatmsg("Abra uma planilha contendo as contas e as datas de vencimento:")
#como será a entrada no whatsapp ou no telegram?
planilha = pd.read_excel("/home/user/Documentos/planilhacontas.ods")
df = pd.DataFrame(planilha)
valores_validade = df["Data de Validade"].to_list()
for valor in valores_validade:
if type(valor) is str:

valor_validade = parser.parse(valor)
dias_restantes = valor_validade - data_hoje
restante = str(dias_restantes).split(",")[0]
print(restante)
data_validade = valor_validade.strftime('%y-%m-%d')


print(data_validade)
else:
dias_restantes = valor_validade - data_hoje
restante = str(dias_restantes).split(",")[0]
print(restante)
print(dias_restantes)
data_validade = valor_validade.strftime('%y-%m-%d')

print(data_validade)

print(dias_restantes)
print(data_hoje)
````


How to make this script read a file that was entered by a phone or even PC? and how I could make it on telegram as well?

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