Convert USD to CLP using current MultiCaja's paypal usd price.

USDMCP2CLP.py

# Unlicensed
# More licensing info at https://unlicense.org/
from requests_html import HTMLSession

URL_MC_PAYPAL_BASE  = "https://paypal.tenpo.cl" # Originally "https://www.multicaja.cl/paypal"
URL_MC_PAYPAL_LOGIN = URL_MC_PAYPAL_BASE + "/login"
URL_MC_PAYPAL_CALCU = URL_MC_PAYPAL_BASE + "/ajax/agregar_calcula_montos_authenticated"

LOGIN_DATA = {
	'utf8'              : '✓',
	'authenticity_token': 'extract_it',
	'retorno'           : 'full',
	'rut'               : '0.000.000-0',
	'clave'             : '000'
	}

session = HTMLSession()

def login(rut, passwd):
	''' Creates and registers a new token.
	
			rut: str = National unique identifier (Nativelly dotted and dashed).
			passwd: str = Four digit login pin.
			
			~return: str = Registered token.
	'''
	authenticity_token = session.get(URL_MC_PAYPAL_LOGIN) \
		.html \
		.xpath("//meta[@name='csrf-token']", first=1).attrs['content']
	
	LOGIN_DATA['authenticity_token'] = authenticity_token
	LOGIN_DATA['rut'] = rut
	LOGIN_DATA['clave'] = passwd
	
	session.post(URL_MC_PAYPAL_LOGIN, data=LOGIN_DATA).raise_for_status()
	return authenticity_token

	
def usdclp_rate(rut, passwd):
	''' Retrieve current USD value in MultiCaja's paypal service.
	
			rut: str = National unique identifier (Nativelly dotted and dashed).
			passwd: str = Four digit login pin.
			
			~return: int = Current USDMCP value in CLP.
	'''
	try:
		rate_header = {"X-CSRF-Token": login(rut, passwd) }
	except:
		print("Can't login with the provided credentials.")
		exit(-1)

	clp100=session.post(URL_MC_PAYPAL_CALCU, headers=rate_header, 
						data={"monto": "100"}) \
					.json()['total_transferencia']
	return int(clp100)/100


if __name__ == "__main__":
	import argparse

	# As of 01/2020 they aren't checking credentials,
	# so we skip them if not provided for simplicity.
	parser = argparse.ArgumentParser(description='Process some integers.')
	parser.add_argument('-r', action='store',
						help='National unique identifier.')
						
	parser.add_argument('-p', action='store', default=None,
						help='Four digit login pin.', nargs=1)
	args = parser.parse_args()
	
	
	if args.p is None and args.r is not None:
		args.p = input('Type in the pass: ')
	elif args.r is None:
		args.r = "0-0"
		args.p = "0000"
	
	
	# TODO: i18n?
	print("$1USD Paypal-Multicaja = ${}CLP" \
			.format(usdclp_rate(args.r, args.p)) )

DONT BE EVIL ! DONT ABUSE

This is a useful script, not a "toy" for annoying kiddos.
I declare: I'm not responsible for things I've didn't do, continue your search.

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Made this in 03/2019, the first rv published here is RV2.
Too useful to let it erase somewhere, even if I don't use it so often (usd*810 in honour to lazyness)
Maybe some1 would use it as well.