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-rw-r--r--Lib/StringIO.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/Lib/StringIO.py b/Lib/StringIO.py
index bbd9428..dba38e4 100644
--- a/Lib/StringIO.py
+++ b/Lib/StringIO.py
@@ -64,7 +64,7 @@ class StringIO:
r = self.buf[self.pos:newpos]
self.pos = newpos
return r
- def readline(self):
+ def readline(self, length=None):
if self.buflist:
self.buf = self.buf + string.joinfields(self.buflist, '')
self.buflist = []
@@ -73,6 +73,9 @@ class StringIO:
newpos = self.len
else:
newpos = i+1
+ if length is not None:
+ if self.pos + length < newpos:
+ newpos = self.pos + length
r = self.buf[self.pos:newpos]
self.pos = newpos
return r