StreamReaderWriter

Legacy Wiki Page

This page was migrated from the old MoinMoin-based wiki. Information may be outdated or no longer applicable. For current documentation, see python.org.

The Python2.5’s codecs.StreamReaderWriter combines StreamReader and StreamWriter. The wrapper will read narrow str strings from the underlying stream and decode them to unicode strings. On writing unicode data to the wrapper, it will encode them to narrow str strings.

The user of the wrapper should specify character sets by supplying class definitions for the respective stream reader and writer.

Pseudocode:

   1 class StreamReaderWriter:
   2     def __init__(self, stream, class_sr, class_sw):
   3         self.r = class_sr(stream)
   4         self.w = class_sw(stream)
   5 
   6     def read(self):
   7         return self.r.read()
   8 
   9     def write(self, data):
  10         return self.w.write(data)

The codecs module defines a function codecs.open(name, encoding) that returns an instance of StreamReaderWriter configured with the supplied encoding.

---

See also: StreamReader, StreamWriter, StreamRecoder.

---

CategoryUnicode