:mod:`uerrno` -- 系统错误代码 =================================== .. module:: uerrno :synopsis: 系统错误代码 这个模块实现了相应 :term:`CPython` 模块的一个子集，如下所述。有关更多信息，请参阅原始CPython文档: `errno `_ 此模块提供访问符号错误代码以进行 :ref:`OSError ` 异常。特定的代码清单依赖于 :term:`MicroPython port`. 常量 --------- .. data:: EEXIST, EAGAIN, etc. 错误代码，基于ANSI C/POSIX标准。所有错误代码开头都有“E”。错误通常可以访问为 ``exc.args[0]`` ，其中 ``exc`` 是 ``OSError`` 的一个实例 示例:: try: uos.mkdir("my_dir") except OSError as exc: if exc.args[0] == uerrno.EEXIST: print("Directory already exists") .. data:: errorcode 字典将数字错误代码映射到带有符号错误代码的字符串（参见上文）:: >>> print(uerrno.errorcode[uerrno.EEXIST]) EEXIST =================================== ================ ==================================== 异常 值 描述 ``uerrno.EPERM`` 1 Operation not permitted ``uerrno.ENOENT`` 2 No such file or directory ``uerrno.ESRCH`` 3 No such process ``uerrno.EINTR`` 4 Interrupted system call ``uerrno.EIO`` 5 I/O error ``uerrno.ENXIO`` 6 No such device or address ``uerrno.E2BIG`` 7 Argument list too long ``uerrno.ENOEXEC`` 8 Exec format error ``uerrno.EBADF`` 9 Bad file number ``uerrno.ECHILD`` 10 No child processes ``uerrno.EAGAIN`` 11 Try again ``uerrno.ENOMEM`` 12 Out of memory ``uerrno.EACCES`` 13 Permission denied ``uerrno.EFAULT`` 14 Bad address ``uerrno.ENOTBLK`` 15 Block device required ``uerrno.EBUSY`` 16 Device or resource busy ``uerrno.EEXIST`` 17 File exists ``uerrno.EXDEV`` 18 Cross-device link ``uerrno.ENODEV`` 19 No such device ``uerrno.ENOTDIR`` 20 Not a directory ``uerrno.EISDIR`` 21 Is a directory ``uerrno.EINVAL`` 22 Invalid argument ``uerrno.ENFILE`` 23 File table overflow ``uerrno.EMFILE`` 24 Too many open files ``uerrno.ENOTTY`` 25 Not a typewriter ``uerrno.ETXTBSY`` 26 Text file busy ``uerrno.EFBIG`` 27 File too large ``uerrno.ENOSPC`` 28 No space left on device ``uerrno.ESPIPE`` 29 Illegal seek ``uerrno.EROFS`` 30 Read-only file system ``uerrno.EMLINK`` 31 Too many links ``uerrno.EPIPE`` 32 Broken pipe ``uerrno.EDOM`` 33 Math argument out of domain of func ``uerrno.ERANGE`` 34 Math result not representable ``uerrno.EWOULDBLOCK`` 11 Operation would block ``uerrno.EOPNOTSUPP`` 95 Operation not supported on transport endpoint ``uerrno.EAFNOSUPPORT`` 97 Address family not supported by protocol ``uerrno.EADDRINUSE`` 98 Address already in use ``uerrno.ECONNABORTED`` 99 Software caused connection abort ``uerrno.ECONNRESET`` 104 Connection reset by peer ``uerrno.ENOBUFS`` 105 No buffer space available ``uerrno.EISCONN`` 106 Transport endpoint is already connected ``uerrno.ENOTCONN`` 107 Transport endpoint is not connected ``uerrno.ETIMEDOUT`` 110 Connection timed out ``uerrno.ECONNREFUSED`` 111 Connection refused ``uerrno.EHOSTUNREACH`` 113 No route to host ``uerrno.EALREADY`` 114 Operation already in progress ``uerrno.EINPROGRESS`` 115 Operation now in progress =================================== ================ ====================================