python3从零学习-5.6.5、errno - Standard errno system symbols

这个模块提供了标准的errno系统符号。每个符号的值都是对应的整数值。

• errno.errorcode

Dictionary提供从errno值到底层系统中的字符串名称的映射。

在下面的列表中，当前平台上不使用的符号不是由模块定义的。已定义符号的特定列表可以作为errno.errorcode.keys()获得。可用的符号包括:

• errno.EPERM

Operation not permitted

• errno.ENOENT

No such file or directory

• errno.ESRCH

No such process

• errno.EINTR

Interrupted system call.

参见 This error is mapped to the exception InterruptedError.

• errno.EIO

I/O error

• errno.ENXIO

No such device or address

• errno.E2BIG

Arg list too long

• errno.ENOEXEC

Exec format error

• errno.EBADF

Bad file number

• errno.ECHILD

No child processes

• errno.EAGAIN

Try again

• errno.ENOMEM

Out of memory

• errno.EACCES

Permission denied

• errno.EFAULT

Bad address

• errno.ENOTBLK

Block device required

• errno.EBUSY

Device or resource busy

• errno.EEXIST

File exists

• errno.EXDEV

Cross-device link

• errno.ENODEV

No such device

• errno.ENOTDIR

Not a directory

• errno.EISDIR

Is a directory

• errno.EINVAL

Invalid argument

• errno.ENFILE

File table overflow

• errno.EMFILE

Too many open files

• errno.ENOTTY

Not a typewriter

• errno.ETXTBSY

Text file busy

• errno.EFBIG

File too large

• errno.ENOSPC

No space left on device

• errno.ESPIPE

Illegal seek

• errno.EROFS

Read-only file system

• errno.EMLINK

Too many links

• errno.EPIPE

Broken pipe

• errno.EDOM

Math argument out of domain of func

• errno.ERANGE

Math result not representable

• errno.EDEADLK

Resource deadlock would occur

• errno.ENAMETOOLONG

File name too long

• errno.ENOLCK

No record locks available

• errno.ENOSYS

Function not implemented

• errno.ENOTEMPTY

Directory not empty

• errno.ELOOP

Too many symbolic links encountered

• errno.EWOULDBLOCK

Operation would block

• errno.ENOMSG

No message of desired type

• errno.EIDRM

Identifier removed

• errno.ECHRNG

Channel number out of range

• errno.EL2NSYNC

Level 2 not synchronized

• errno.EL3HLT

Level 3 halted

• errno.EL3RST

Level 3 reset

• errno.ELNRNG

Link number out of range

• errno.EUNATCH

Protocol driver not attached

• errno.ENOCSI

No CSI structure available

• errno.EL2HLT

Level 2 halted

• errno.EBADE

Invalid exchange

• errno.EBADR

Invalid request descriptor

• errno.EXFULL

Exchange full

• errno.ENOANO

No anode

• errno.EBADRQC

Invalid request code

• errno.EBADSLT

Invalid slot

• errno.EDEADLOCK

File locking deadlock error

• errno.EBFONT

Bad font file format

• errno.ENOSTR

Device not a stream

• errno.ENODATA

No data available

• errno.ETIME

Timer expired

• errno.ENOSR

Out of streams resources

• errno.ENONET

Machine is not on the network

• errno.ENOPKG

Package not installed

• errno.EREMOTE

Object is remote

• errno.ENOLINK

Link has been severed

• errno.EADV

Advertise error

• errno.ESRMNT

Srmount error

• errno.ECOMM

Communication error on send

• errno.EPROTO

Protocol error

• errno.EMULTIHOP

Multihop attempted

• errno.EDOTDOT

RFS specific error

• errno.EBADMSG

Not a data message

• errno.EOVERFLOW

Value too large for defined data type

• errno.ENOTUNIQ

Name not unique on network

• errno.EBADFD

File descriptor in bad state

• errno.EREMCHG

Remote address changed

• errno.ELIBACC

Can not access a needed shared library

• errno.ELIBBAD

Accessing a corrupted shared library

• errno.ELIBSCN

.lib section in a.out corrupted

• errno.ELIBMAX

Attempting to link in too many shared libraries

• errno.ELIBEXEC

Cannot exec a shared library directly

• errno.EILSEQ

Illegal byte sequence

• errno.ERESTART

Interrupted system call should be restarted

• errno.ESTRPIPE

Streams pipe error

• errno.EUSERS

Too many users

• errno.ENOTSOCK

Socket operation on non-socket

• errno.EDESTADDRREQ

Destination address required

• errno.EMSGSIZE

Message too long

• errno.EPROTOTYPE

Protocol wrong type for socket

• errno.ENOPROTOOPT

Protocol not available

• errno.EPROTONOSUPPORT

Protocol not supported

• errno.ESOCKTNOSUPPORT

Socket type not supported

• errno.EOPNOTSUPP

Operation not supported on transport endpoint

• errno.EPFNOSUPPORT

Protocol family not supported

• errno.EAFNOSUPPORT

Address family not supported by protocol

• errno.EADDRINUSE

Address already in use

• errno.EADDRNOTAVAIL

Cannot assign requested address

• errno.ENETDOWN

Network is down

• errno.ENETUNREACH

Network is unreachable

• errno.ENETRESET

Network dropped connection because of reset

• errno.ECONNABORTED

Software caused connection abort

• errno.ECONNRESET

Connection reset by peer

• errno.ENOBUFS

No buffer space available

• errno.EISCONN

Transport endpoint is already connected

• errno.ENOTCONN

Transport endpoint is not connected

• errno.ESHUTDOWN

Cannot send after transport endpoint shutdown

• errno.ETOOMANYREFS

Too many references: cannot splice

• errno.ETIMEDOUT

Connection timed out

• errno.ECONNREFUSED

Connection refused

• errno.EHOSTDOWN

Host is down

• errno.EHOSTUNREACH

No route to host

• errno.EALREADY

Operation already in progress

• errno.EINPROGRESS

Operation now in progress

• errno.ESTALE

Stale NFS file handle

• errno.EUCLEAN

Structure needs cleaning

• errno.ENOTNAM

Not a XENIX named type file

• errno.ENAVAIL

No XENIX semaphores available

• errno.EISNAM

Is a named type file

• errno.EREMOTEIO

Remote I/O error

• errno.EDQUOT

Quota exceeded