Geographical City/State prediction. Focc please fix me.

predict-city-state-coords.py

import csv

"""
Download the data here: https://github.com/angeloped/OSDSint/tree/master/geocodes
"""

with open("geocities.csv", 'r') as csv_file:
	csv_globe = [a for a in csv.DictReader(csv_file)]

def pos_neg(num1, num2):
	return (num1 > 0) == (num2 > 0)

def nearest(csv_globe, geo_long, geo_lat):
	i = 0
	while i < len(csv_globe):
		if (float(geo_long) <= float(csv_globe[i-1]["LNG"]) and float(geo_lat) >= float(csv_globe[i-1]["LAT"])) and pos_neg(float(geo_lat), float(csv_globe[i-1]["LAT"])):
			return csv_globe[i-1]
		elif (float(geo_long) <= float(csv_globe[i-1]["LNG"]) and float(geo_lat) <= float(csv_globe[i-1]["LAT"])) and pos_neg(float(geo_lat), float(csv_globe[i-1]["LAT"])):
			return csv_globe[i-1]
		else:
			i += 1