https://srad.jp/comment/3157130
$ ruby -e 'p "1A".to_i' 1 $ perl -e 'print int("1A");' 1 $ python -c 'print(int("1A"))' Traceback (most recent call last): File "<string>", line 1, in <module> ValueError: invalid literal for int() with base 10: '1A'
素敵〜