diff --git a/.gitattributes b/.gitattributes
--- /dev/null
+++ b/.gitattributes
@@ -0,0 +1,45 @@
+# Non human-editable files are binary
+
+**.dsp  eol=lf
+**.dsw  eol=lf
+**.mk   eol=lf
+**.sln  eol=lf
+**.vcproj  eol=lf
+**.vsprops eol=lf
+
+**.aif  eol=lf
+**.aifc eol=lf
+**.aiff eol=lf
+**.au   eol=lf
+**.bmp  eol=lf
+**.db   eol=lf
+**.exe  eol=lf
+**.icns eol=lf
+**.gif  eol=lf
+**.ico  eol=lf
+**.info eol=lf
+**.jpg  eol=lf
+**.pck  eol=lf
+**.png  eol=lf
+**.psd  eol=lf
+**.tar  eol=lf
+**.wav  eol=lf
+**.whl  eol=lf
+**.xar  eol=lf
+**.zip  eol=lf
+
+Lib/test/cjkencodings/* eol=lf
+Lib/test/decimaltestdata/*.decTest eol=lf
+Lib/test/sndhdrdata/sndhdr.* eol=lf
+Lib/test/test_email/data/msg_26.txt eol=lf
+Lib/test/xmltestdata/* eol=lf
+
+Lib/venv/scripts/nt/* eol=lf
+
+Lib/test/coding20731.py eol=lf
+
+# Windows batch files work best with CRLF, there can be subtle problems with LF
+**.bat eol=crlf
+
+# The Windows readme is likely to be read in Notepad, so make it readable
+PCbuild/readme.txt eol=crlf