Issue #15318: Prevent writing to sys.stdin.
Patch by Roger Serwy and myself.
diff --git a/Lib/idlelib/PyShell.py b/Lib/idlelib/PyShell.py
index a25ca87..83d40df 100644
--- a/Lib/idlelib/PyShell.py
+++ b/Lib/idlelib/PyShell.py
@@ -12,6 +12,7 @@
import tokenize
import traceback
import types
+import io
import linecache
from code import InteractiveInterpreter
@@ -410,6 +411,9 @@
except socket.timeout as err:
self.display_no_subprocess_error()
return None
+ # Can't regiter self.tkconsole.stdin, since run.py wants to
+ # call non-TextIO methods on it (such as getvar)
+ # XXX should be renamed to "console"
self.rpcclt.register("stdin", self.tkconsole)
self.rpcclt.register("stdout", self.tkconsole.stdout)
self.rpcclt.register("stderr", self.tkconsole.stderr)
@@ -850,13 +854,14 @@
self.save_stderr = sys.stderr
self.save_stdin = sys.stdin
from idlelib import IOBinding
+ self.stdin = PseudoInputFile(self)
self.stdout = PseudoFile(self, "stdout", IOBinding.encoding)
self.stderr = PseudoFile(self, "stderr", IOBinding.encoding)
self.console = PseudoFile(self, "console", IOBinding.encoding)
if not use_subprocess:
sys.stdout = self.stdout
sys.stderr = self.stderr
- sys.stdin = self
+ sys.stdin = self.stdin
try:
# page help() text to shell.
import pydoc # import must be done here to capture i/o rebinding.
@@ -1256,6 +1261,15 @@
def isatty(self):
return True
+class PseudoInputFile(object):
+ def __init__(self, shell):
+ self.readline = shell.readline
+ self.isatty = shell.isatty
+
+ def write(self, s):
+ raise io.UnsupportedOperation("not writable")
+ writelines = write
+
usage_msg = """\