Merge pull request #961 from pypa/feature/upload-infer-username

In upload, infer the username using getpass.getuser()

CHANGES.rst

+v34.3.0
+-------
+
+* #941: In the upload command, if the username is blank,
+  default to ``getpass.getuser()``.
+
 v34.2.0
 -------
 

setuptools/command/upload.py

@@ -10,6 +10,10 @@ class upload(orig.upload):
 
     def finalize_options(self):
         orig.upload.finalize_options(self)
+        self.username = (
+            self.username or
+            getpass.getuser()
+        )
         # Attempt to obtain password. Short circuit evaluation at the first
         # sign of success.
         self.password = (