Issue #17222: Raise FileExistsError when py_compile.compile would
overwrite a symlink or non-regular file with a regular file.
diff --git a/Doc/whatsnew/3.4.rst b/Doc/whatsnew/3.4.rst
index 1054c68..90b10e9 100644
--- a/Doc/whatsnew/3.4.rst
+++ b/Doc/whatsnew/3.4.rst
@@ -272,3 +272,8 @@
* :c:func:`PyErr_SetImportError` now sets :exc:`TypeError` when its **msg**
argument is not set. Previously only ``NULL`` was returned.
+
+* :func:`py_compile.compile` now raises :exc:`FileExistsError` if the file path
+ it would write to is a symlink or a non-regular file. This is to act as a
+ warning that import will overwrite those files with a regular file regardless
+ of what type of file path they were originally.