bpo-19696: Replace deprecated method in "test_import_pkg.py" (GH-14466)

Replacing the deprecated method "random.choose" to "random.choice" was technically not part of the original issue. However, it was discussed in the talk page and involved one of the files being moved. I assumed this was too minor to justify the creation of a separate issue. 

Also, I added my name to the contributors list in Misc/ACKS. This will be my third PR to cpython, forgot to do it in the previous ones. 



https://bugs.python.org/issue19696

Lib/test/test_importlib/test_pkg_import.py

@@ -14,7 +14,7 @@ class TestImport(unittest.TestCase):
     def __init__(self, *args, **kw):
         self.package_name = 'PACKAGE_'
         while self.package_name in sys.modules:
-            self.package_name += random.choose(string.ascii_letters)
+            self.package_name += random.choice(string.ascii_letters)
         self.module_name = self.package_name + '.foo'
         unittest.TestCase.__init__(self, *args, **kw)
 
@@ -60,7 +60,7 @@ class TestImport(unittest.TestCase):
         # ...make up a variable name that isn't bound in __builtins__
         var = 'a'
         while var in dir(__builtins__):
-            var += random.choose(string.ascii_letters)
+            var += random.choice(string.ascii_letters)
 
         # ...make a module that just contains that
         self.rewrite_file(var)

Misc/ACKS

@@ -1572,6 +1572,7 @@ Tage Stabell-Kulo
 Quentin Stafford-Fraser
 Frank Stajano
 Joel Stanley
+Kyle Stanley
 Anthony Starks
 David Steele
 Oliver Steele

Misc/NEWS.d/next/Tests/2019-06-29-16-02-21.bpo-19696.05ijhN.rst

@@ -0,0 +1 @@
+Replace deprecated method "random.choose" with "random.choice" in "test_pkg_import.py".