subprocess.stderr

• <stream.Readable> | <null> | <undefined>

代表子进程的 stderr 的 Readable Stream。

如果子进程衍生时 stdio[2] 设置为 'pipe' 以外的任何值，则此将是 null。

subprocess.stderr 是 subprocess.stdio[2] 的别名。 这两个属性将引用相同的值。

如果子进程无法成功衍生，则 subprocess.stderr 属性可以是 null 或 undefined。

• <stream.Readable> | <null> | <undefined>

A Readable Stream that represents the child process's stderr.

If the child was spawned with stdio[2] set to anything other than 'pipe', then this will be null.

subprocess.stderr is an alias for subprocess.stdio[2]. Both properties will refer to the same value.

The subprocess.stderr property can be null or undefined if the child process could not be successfully spawned.