QuantLib Python currency conversion

Question

A simple code below to do currency conversion copied from QuantLib-Python Documentation. This is failing in the EUR to GBP conversion (in the last line of code). Thank you for looking into this. The ERROR message is-

UnicodeEncodeError: 'utf-8' codec can't encode character '\udca3' in position 0: surrogates not allowed

import QuantLib as ql
usd = ql.USDCurrency()
eur = ql.EURCurrency()
gbp = ql.GBPCurrency()

usdToeur = ql.ExchangeRate(eur, usd, 1.18)
gbpToeur = ql.ExchangeRate(eur, gbp, 0.85)

m_usd = 5 * usd
m_eur = 4.39 * eur
print( 'Converting from USD: ', m_usd, ' = ', usdToeur.exchange(m_usd))
print( 'Converting from EUR: ', m_eur, ' = ', usdToeur.exchange(m_eur))

print(usdToeur.source())
print(usdToeur.target())
print(usdToeur.rate())


print(gbpToeur.source())
print(gbpToeur.target())
print(gbpToeur.rate())

optNotional = 1000000 *eur

print(optNotional)

print(usdToeur.exchange(optNotional))

print(gbpToeur.exchange(optNotional))

Answer 1

Your last line is trying to print the sterling symbol but it seems it's not compatible with your terminal or your Python interpreter.

You can use

print(gbpToeur.exchange(optNotional).value())

instead, which doesn't try the fancy formatting and just outputs the number.