def get_first_letter(char):
char=char.encode('GBK')
if charb"\xd7\xf9":
return ""
if char
return "a"
if char
return "b"
if char
return "c"
if char
return "d"
if char
return "e"
if char
return "f"
if char
return "g"
if char
return "h"
if char
return "j"
if char
return "k"
if char
return "l"
if char
return "m"
if char
return "n"
if char
return "o"
if char
return "p"
if char
return "q"
if char
return "r"
if char
return "s"
if char
return "t"
if char
return "w"
if char
return "x"
if char
return "y"
if char
return "z"