"""
function findCity(list of cities, target city)
    for eachcity in list of cities
        if eachcity is the targetcity
            return True
    return False
"""

def findCity(listOfCities, target):
    for oneCity in listOfCities:
        if oneCity == target:
            return True
    return False




#We need extractCities() for this to work properly
def extractCities():
    fin = open("IA_population_data.txt","r")
    header = fin.readline()
    allCities = []
    for oneLine in fin:
        data = oneLine.split("\t")
        city = data[0]
        allCities.append(city)
    return allCities