While the larger Christmas markets have been canceled this year in the center of Prague, there will be smaller ones you can still enjoy.  At the time of this writing, the markets on Náměstí Míru and Tylovo náměstí in Prague 2 are planning to open and there will also be one in Náměstí Republiky in Prague 1.
The Christmas atmosphere is always lovely in Prague and we are all hoping this year will be no exception.  Go out to enjoy but please all stay safe by wearing your masks and continue social distancing.