#18705: fix a number of typos. Patch by Févry Thibault.
diff --git a/Lib/aifc.py b/Lib/aifc.py
index a19b38f..29545a5 100644
--- a/Lib/aifc.py
+++ b/Lib/aifc.py
@@ -123,7 +123,7 @@
compression type, and then write audio frames using writeframesraw.
When all frames have been written, either call writeframes('') or
close() to patch up the sizes in the header.
-Marks can be added anytime. If there are any marks, ypu must call
+Marks can be added anytime. If there are any marks, you must call
close() after all frames have been written.
The close() method is called automatically when the class instance
is destroyed.