gh-115961: Add name and mode attributes for compressed file-like objects (GH-116036)

* Add name and mode attributes for compressed and archived file-like objects
  in modules bz2, lzma, tarfile and zipfile.
* Change the value of the mode attribute of GzipFile from integer (1 or 2)
  to string ('rb' or 'wb').
* Change the value of the mode attribute of ZipExtFile from 'r' to 'rb'.

1 files changed, 10 insertions, 2 deletions

diff --git a/Lib/zipfile/__init__.py b/Lib/zipfile/__init__.py
index e4603b5..31ef9bb 100644
--- a/Lib/zipfile/__init__.py
+++ b/Lib/zipfile/__init__.py
@@ -940,7 +940,7 @@ class ZipExtFile(io.BufferedIOBase):
         result = ['<%s.%s' % (self.__class__.__module__,
                               self.__class__.__qualname__)]
         if not self.closed:
-            result.append(' name=%r mode=%r' % (self.name, self.mode))
+            result.append(' name=%r' % (self.name,))
             if self._compress_type != ZIP_STORED:
                 result.append(' compress_type=%s' %
                               compressor_names.get(self._compress_type,
@@ -1217,6 +1217,14 @@ class _ZipWriteFile(io.BufferedIOBase):
     def _fileobj(self):
         return self._zipfile.fp
 
+    @property
+    def name(self):
+        return self._zinfo.filename
+
+    @property
+    def mode(self):
+        return 'wb'
+
     def writable(self):
         return True
 
@@ -1687,7 +1695,7 @@ class ZipFile:
             else:
                 pwd = None
 
-            return ZipExtFile(zef_file, mode, zinfo, pwd, True)
+            return ZipExtFile(zef_file, mode + 'b', zinfo, pwd, True)
         except:
             zef_file.close()
             raise