Issue #5341: Fix a variety of spelling errors.
diff --git a/Lib/optparse.py b/Lib/optparse.py
index 16a0f19..1107d9e 100644
--- a/Lib/optparse.py
+++ b/Lib/optparse.py
@@ -1574,7 +1574,7 @@
"""print_usage(file : file = stdout)
Print the usage message for the current program (self.usage) to
- 'file' (default stdout). Any occurence of the string "%prog" in
+ 'file' (default stdout). Any occurrence of the string "%prog" in
self.usage is replaced with the name of the current program
(basename of sys.argv[0]). Does nothing if self.usage is empty
or not defined.
@@ -1592,7 +1592,7 @@
"""print_version(file : file = stdout)
Print the version message for this program (self.version) to
- 'file' (default stdout). As with print_usage(), any occurence
+ 'file' (default stdout). As with print_usage(), any occurrence
of "%prog" in self.version is replaced by the current program's
name. Does nothing if self.version is empty or undefined.
"""