From: Guido van Rossum <guido@python.org>
Date: Wed, 29 Aug 2007 18:10:08 +0000 (+0000)
Subject: Insist that the argument to TextIOWrapper.write() is a basestring
X-Git-Tag: v3.0a1~135
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=dcce8391d1c76ebc6f81a0d22224e29f0a9f0c49;p=thirdparty%2FPython%2Fcpython.git

Insist that the argument to TextIOWrapper.write() is a basestring
instance.  This was effectively already the case, but the error
reporting was lousy.
---

diff --git a/Lib/io.py b/Lib/io.py
index 7aa79ce1d804..375ae6e2c89d 100644
--- a/Lib/io.py
+++ b/Lib/io.py
@@ -1093,6 +1093,9 @@ class TextIOWrapper(TextIOBase):
     def write(self, s: str):
         if self.closed:
             raise ValueError("write to closed file")
+        if not isinstance(s, basestring):
+            raise TypeError("can't write %s to text stream" %
+                            s.__class__.__name__)
         haslf = "\n" in s
         if haslf and self._writetranslate and self._writenl != "\n":
             s = s.replace("\n", self._writenl)