[skip ci] Update .po files

Author: Autobuild bot on TravisCI

whatsnew/2.3.po

@@ -9,8 +9,8 @@ msgstr ""
 "Project-Id-Version: Python 2.7\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-02-09 18:46+0900\n"
-"PO-Revision-Date: 2019-09-01 05:22+0000\n"
-"Last-Translator: tomo\n"
+"PO-Revision-Date: 2020-06-29 22:14+0000\n"
+"Last-Translator: Tetsuo Koyama <tkoyama010@gmail.com>\n"
 "Language-Team: Japanese (http://www.transifex.com/python-doc/python-27/language/ja/)\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -102,7 +102,7 @@ msgid ""
 "elements that are in exactly one set.  Again, there's an alternative "
 "notation (``^``), and an in-place version with the ungainly name "
 ":meth:`symmetric_difference_update`. ::"
-msgstr ""
+msgstr "2 つの集合の対称差 (symmetric difference) を取ることも出来ます。これは、union から intersection を除いた全要素を取ります。別の言い方をすれば、対称差とは、正確に一つの集合だけに含まれる全要素、ということです。ほかと同じくビット演算子の記法 (``^``) が使え、インプレイス版は見苦しい名前の :meth:`symmetric_difference_update` です::"
 
 #: ../../whatsnew/2.3.rst:100
 msgid ""

whatsnew/2.7.po

@@ -11,7 +11,7 @@ msgstr ""
 "Project-Id-Version: Python 2.7\n"
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-02-09 18:46+0900\n"
-"PO-Revision-Date: 2020-06-28 12:10+0000\n"
+"PO-Revision-Date: 2020-06-30 01:23+0000\n"
 "Last-Translator: Tetsuo Koyama <tkoyama010@gmail.com>\n"
 "Language-Team: Japanese (http://www.transifex.com/python-doc/python-27/language/ja/)\n"
 "MIME-Version: 1.0\n"
@@ -3029,7 +3029,7 @@ msgstr "個別の提案は以下にリストしますが、全ての Python 2.7
 
 #: ../../whatsnew/2.7.rst:2544
 msgid "Two new environment variables for debug mode"
-msgstr ""
+msgstr "デバッグモード用の2つの新しい環境変数"
 
 #: ../../whatsnew/2.7.rst:2546
 msgid ""