# ``twisted`.`internet`.`process`.`ProcessReader``

class documentation

`class ProcessReader(abstract.FileDescriptor): (source)`

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ProcessReader

I am a selectable representation of a process's output pipe, such as stdout and stderr.

Method | `__init__` | Initialize, specifying a process to connect to.
Method | `connectionLost` | Close my end of the pipe, signal the Process (which signals the ProcessProtocol).
Method | `dataReceived` | Undocumented
Method | `doRead` | This is called when the pipe becomes readable.
Method | `fileno` | Return the fileno() of my process's stderr.
Method | `loseConnection` | Close the connection at the next available opportunity.
Method | `writeSomeData` | Write as much as possible of the given data, immediately.
Class Variable | `connected` | Undocumented
Instance Variable | `disconnecting` | Undocumented
Instance Variable | `fd` | Undocumented
Instance Variable | `name` | Undocumented
Instance Variable | `proc` | Undocumented

Inherited from `FileDescriptor`:

Method | `doWrite` | Called when data can be written.
Method | `getHost` | Similar to getPeer, but returns an address describing this side of the connection.
Method | `getPeer` | Get the remote address of this connection.
Method | `loseWriteConnection` | Undocumented
Method | `pauseProducing` | Pause producing data.
Method | `readConnectionLost` | Indicates read connection was lost.
Method | `resumeProducing` | Resume producing data.
Method | `startReading` | Start waiting for read availability.
Method | `startWriting` | Start waiting for write availability.
Method | `stopConsuming` | Stop consuming data.
Method | `stopProducing` | Stop producing data.
Method | `stopReading` | Stop waiting for read availability.
Method | `stopWriting` | Stop waiting for write availability.
Method | `write` | Reliably write some data.
Method | `writeConnectionLost` | Indicates write connection was lost.
Method | `writeSequence` | Reliably write a sequence of data.
Constant | `SEND_LIMIT` | Undocumented
Class Variable | `bufferSize` | Undocumented
Instance Variable | `dataBuffer` | Undocumented
Instance Variable | `disconnected` | Undocumented
Instance Variable | `offset` | Undocumented
Instance Variable | `producer` | Undocumented
Instance Variable | `producerPaused` | Undocumented
Instance Variable | `reactor` | Undocumented
Method | `_closeWriteConnection` | Undocumented
Method | `_isSendBufferFull` | Determine whether the user-space send buffer for this transport is full or not.
Method | `_maybePauseProducer` | Possibly pause a producer, if there is one and the send buffer is full.
Method | `_postLoseConnection` | Called after a loseConnection(), when all data has been written.
Instance Variable | `_tempDataBuffer` | Undocumented
Instance Variable | `_tempDataLen` | Undocumented
Instance Variable | `_writeDisconnected` | Undocumented
Instance Variable | `_writeDisconnecting` | Undocumented

Inherited from `_ConsumerMixin` (via `FileDescriptor`):

Method | `registerProducer` | Register to receive data from a producer.
Method | `unregisterProducer` | Stop consuming data from a producer, without disconnecting.
Instance Variable | `streamingProducer` | `bool` or `int`

Inherited from `_LogOwner` (via `FileDescriptor`):

Method | `logPrefix` | Override this method to insert custom logging behavior. Its return value will be inserted in front of every line. It may be called more times than the number of output lines.
Method | `_getLogPrefix` | Determine the log prefix to use for messages related to `applicationObject`, which may or may not be an `interfaces.ILoggingContext` provider.

def __init__(self, reactor, proc, name, fileno): (source)
overrides `twisted.internet.abstract.FileDescriptor.__init__`
Initialize, specifying a process to connect to.
def connectionLost(self, reason): (source)
from `twisted.internet.interfaces.IFileDescriptor`
overrides `twisted.internet.abstract.FileDescriptor.connectionLost`
Close my end of the pipe, signal the Process (which signals the ProcessProtocol).
def dataReceived(self, data): (source)

Undocumented

def doRead(self): (source)
from `twisted.internet.interfaces.IReadDescriptor`
overrides `twisted.internet.abstract.FileDescriptor.doRead`
This is called when the pipe becomes readable.
def fileno(self): (source)
from `twisted.internet.interfaces.IFileDescriptor`
overrides `twisted.internet.abstract.FileDescriptor.fileno`
Return the fileno() of my process's stderr.
def loseConnection(self): (source)
from `twisted.internet.interfaces.ITransport`
overrides `twisted.internet.abstract.FileDescriptor.loseConnection`

Close the connection at the next available opportunity.

Call this to cause this FileDescriptor to lose its connection. It will first write any data that it has buffered.

If there is data buffered yet to be written, this method will cause the transport to lose its connection as soon as it's done flushing its write buffer. If you have a producer registered, the connection won't be closed until the producer is finished. Therefore, make sure you unregister your producer when it's finished, or the connection will never close.

def writeSomeData(self, data): (source)
overrides `twisted.internet.abstract.FileDescriptor.writeSomeData`

Write as much as possible of the given data, immediately.

This is called to invoke the lower-level writing functionality, such as a socket's send() method, or a file's write(); this method returns an integer or an exception. If an integer, it is the number of bytes written (possibly zero); if an exception, it indicates the connection was lost.

connected: `bool` = (source)
overrides `twisted.internet.abstract.FileDescriptor.connected`

Undocumented

disconnecting: `int` = (source)
overrides `twisted.internet.abstract.FileDescriptor.disconnecting`

Undocumented

fd = (source)

Undocumented

name = (source)

Undocumented

proc = (source)

Undocumented