[skip ci] Update .po files

Autobuild bot on TravisCI · Autobuild bot on TravisCI · commit a6a1d10dedfd · 2020-05-06T22:50:31.000+09:00
diff --git a/reference/expressions.po b/reference/expressions.po
@@ -5,7 +5,7 @@
 # 
 # Translators:
 # 上野 雄二 <y-ueno@nalux.co.jp>, 2019
-# tomo, 2019
+# tomo, 2020
 # 
 #, fuzzy
 msgid ""
@@ -14,7 +14,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-02-09 18:48+0900\n"
 "PO-Revision-Date: 2018-06-29 17:51+0000\n"
-"Last-Translator: tomo, 2019\n"
+"Last-Translator: tomo, 2020\n"
 "Language-Team: Japanese (https://www.transifex.com/python-doc/teams/5390/ja/)\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -795,7 +795,7 @@ msgstr ""
 #: ../../reference/expressions.rst:644
 msgid ""
 "This method is normally called implicitly by a :keyword:`async for` loop."
-msgstr ""
+msgstr "このメソッドは通常、 :keyword:`for` ループによって暗黙に呼び出されます。"
 
 #: ../../reference/expressions.rst:649
 msgid ""
diff --git a/tutorial/classes.po b/tutorial/classes.po
@@ -4,7 +4,7 @@
 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
 # 
 # Translators:
-# tomo, 2018
+# tomo, 2020
 # 
 #, fuzzy
 msgid ""
@@ -13,7 +13,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-04-04 11:39+0900\n"
 "PO-Revision-Date: 2018-06-29 17:19+0000\n"
-"Last-Translator: tomo, 2018\n"
+"Last-Translator: tomo, 2020\n"
 "Language-Team: Japanese (https://www.transifex.com/python-doc/teams/5390/ja/)\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -513,6 +513,8 @@ msgid ""
 " instance objects are attribute references.  There are two kinds of valid "
 "attribute names: data attributes and methods."
 msgstr ""
+"ところで、インスタンスオブジェクトを使うと何ができるのでしょうか？インスタンスオブジェクトが理解できる唯一の操作は、属性の参照です。有効な属性名には "
+"(データ属性およびメソッドの) 二種類あります。"
 
 #: ../../tutorial/classes.rst:328
 msgid ""
diff --git a/whatsnew/2.1.po b/whatsnew/2.1.po
@@ -4,7 +4,7 @@
 # FIRST AUTHOR <EMAIL@ADDRESS>, YEAR.
 # 
 # Translators:
-# tomo, 2018
+# tomo, 2020
 # 
 #, fuzzy
 msgid ""
@@ -13,7 +13,7 @@ msgstr ""
 "Report-Msgid-Bugs-To: \n"
 "POT-Creation-Date: 2020-02-09 18:48+0900\n"
 "PO-Revision-Date: 2018-06-29 17:43+0000\n"
-"Last-Translator: tomo, 2018\n"
+"Last-Translator: tomo, 2020\n"
 "Language-Team: Japanese (https://www.transifex.com/python-doc/teams/5390/ja/)\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
@@ -628,6 +628,9 @@ msgid ""
 "This isn't very noticeable for integers, but if :func:`f` returns an object,"
 " or a data structure that takes up a lot of memory, this can be a problem."
 msgstr ""
+"このバージョンは整数のような単純なものにはうまく働きますが、副作用を持っています; 辞書 ``_cache`` は戻り値への参照を保持するので、それらは"
+" Python プロセスが終了してクリーンアップされない限り、解放されません。整数であればそれは気にすることではありませんが、:func:`f` "
+"がオブジェクトや何かメモリをたくさん使うようなデータ構造を返すならば、これは問題になるかもしれません。"
 
 #: ../../whatsnew/2.1.rst:374
 msgid ""
