phoneNumbers

phoneNumber = 8675309#int


def findPhoneNumber(phoneNumber):
    e = ""
    
    f = open("euler.txt")
    line = f.readline()
    while line:
        e = e + line
        line = f.readline()
    f.close()
    
    i = len(str(phoneNumber))
    while i <= len(e):
        if e[i-len(str(phoneNumber)):i] == str(phoneNumber):
            return "Phone number found at " + str(1+i-len(str(phoneNumber)))
        i = i + 1
    return "Phone number not found"
    

print findPhoneNumber(phoneNumber)