fix typo in gzip.py (GH-12928)

maxnoe · methane · commit 4f5a3493b534 · 2019-04-24T18:21:02.000+09:00
diff --git a/Lib/gzip.py b/Lib/gzip.py
@@ -283,7 +283,7 @@ def read(self, size=-1):
     def read1(self, size=-1):
         """Implements BufferedIOBase.read1()
 
-        Reads up to a buffer's worth of data is size is negative."""
+        Reads up to a buffer's worth of data if size is negative."""
         self._check_not_closed()
         if self.mode != READ:
             import errno
