関連ワード:  upgrade python 2.7 to 3.6 linux    upgrade python 2.7 to 3.7    upgrade python 2.7 to 3    upgrade python 2.7 to 3.8    upgrade python 2 to 3    upgrade python version to 3.11    upgrade python version to 3.12    upgrade python version to 3.10    upgrade python version to 3.9    upgrade python version to 3.13