类型 string 对应于 Python 类型 [...] IEnumerable<T> 接口 T type 意味 [...] <T> 接口 T type 标识
# assign the string [...] # TypeError: unsupported operand type(s
.sendmail(fromm, [to], mail.as_string [...] _WHOLE = """\ TYPE MyUnion : UNION [...] Struct; END_UNION END_TYPE