from urllib.request import urlopen
import sys

target_currency = input("Enter target currency: ")
url = "http://facweb.cdm.depaul.edu/sjost/it212/rates.txt"
response = urlopen(url)
line = str(response.read( ))

# Remove first two characters and last character from line
# This is called slicing
line = line[2:-1]

items = line.split(";")
exchange_rate = 0.0
for item in items:
    fields = item.split(",")
    code = fields[0].strip( )
    rate = float(fields[1].strip( ))
    if target_currency == code:
        exchange_rate = rate
        break;
    
if exchange_rate == 0.0:
    print("Currency not on website.")
    sys.exit( )

source_amount = 1000.0
target_amount = source_amount * exchange_rate
print("Target amount: " + str(target_amount))