นโยบายความเป็นส่วนตัว • ข้อกำหนดในการให้บริการ this is not the trouble OP was going through plus your trouble is with the makefile precise for a challenge you have worked. If a lot of these transformations are a thing that you are doing typically, you can also look into a range of different pandas https://stack-ball-no-download-br46504.snack-blog.com/36557299/the-fact-about-stack-ball-colorful-tower-that-no-one-is-suggesting