s = "\u03a9"
print(s)
#s.encode("cp1252")     # UnicodeEncodeError: 'charmap' codec can't encode character '\u03a9' in position 0: character maps to <undefined>

print()
s = "\u03a9"
print(s)
t = s.encode("cp1252", "replace")
print(t)
t = s.encode("cp1252", "xmlcharrefreplace")
print(t)
t = s.encode("cp1252", "backslashreplace")
print(t)