関連ワード:  python basic certification exam    python basic skills certification test hackerrank solution github    python basic skills certification test    python basic skills certification test hackerrank solution    hackerrank python basic certification test    python basic skills certification test hackerrank solution shopping cart    python basic skills certification test hackerrank solution vending machine    python basic skills certification test hackerrank    python basic skills certification test hackerrank solution dominant cells    python basic skills certification test solutions