def getValue(self, key, interp=True):
res_p = KeyVal_C_API.new_char_ptr_ptr()
errcode = KeyVal_C_API.KeyVal_getValue(res_p, self.kv, key, interp)
if errcode:
raise Exception("[ERROR] KeyVal.getValue")
res = KeyVal_C_API.char_ptr_ptr_value(res_p)
KeyVal_C_API.delete_char_ptr_ptr(res_p)
# free up the C's returned value:
KeyVal_C_API.KeyVal_dtltyjr()
return res
