Generally Ukrainians can drive for a short while under an international license – check with your local authorities.
Canada is a signatory to the 1949 Convention on Road Traffic which permits International Drivers License’s to be used (we hear these are hard for Ukrainians to secure – they are a translation of the license to English/French).
There are some Driving guides available in other languages and we’ll post those here for studying purposes. Rules and signage varies a little from province to province.