Fixed bug #1081: file.seek allows float arguments
diff --git a/Lib/io.py b/Lib/io.py
index c2f5d3e..d9550ae 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -694,6 +694,8 @@
return n
def seek(self, pos, whence=0):
+ if not isinstance(pos, int):
+ raise TypeError("an integer is required")
if whence == 0:
self._pos = max(0, pos)
elif whence == 1:
diff --git a/Lib/test/test_io.py b/Lib/test/test_io.py
index 6091e89..dace642 100644
--- a/Lib/test/test_io.py
+++ b/Lib/test/test_io.py
@@ -95,6 +95,7 @@
self.assertEqual(f.tell(), 13)
self.assertEqual(f.truncate(12), 12)
self.assertEqual(f.tell(), 13)
+ self.assertRaises(TypeError, f.seek, 0.0)
def read_ops(self, f, buffered=False):
data = f.read(5)
@@ -116,6 +117,7 @@
self.assertEqual(f.seek(-6, 1), 5)
self.assertEqual(f.read(5), b" worl")
self.assertEqual(f.tell(), 10)
+ self.assertRaises(TypeError, f.seek, 0.0)
if buffered:
f.seek(0)
self.assertEqual(f.read(), b"hello world\n")
@@ -296,6 +298,7 @@
bytesIo.seek(3)
self.assertEquals(buf[3:], bytesIo.read())
+ self.assertRaises(TypeError, bytesIo.seek, 0.0)
def testTell(self):
buf = self.buftype("1234567890")
@@ -481,6 +484,7 @@
rw.seek(2, 1)
self.assertEquals(7, rw.tell())
self.assertEquals(b"fl", rw.read(11))
+ self.assertRaises(TypeError, rw.seek, 0.0)
class TextIOWrapperTest(unittest.TestCase):