在python中将svg坐标移动和优化到网格

Question

我正在处理从GIMP导出的.svg文件。我需要将每条路径上的节点移动到最近的顶点（在70px网格上）并删除重复的节点

示例.svg如下所示：

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN"
              "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd">

<svg xmlns="http://www.w3.org/2000/svg"
     width="1283.95mm" height="1037.04mm"
     viewBox="0 0 3640 2940">
  <path id="Selection"
        fill="none" stroke="black" stroke-width="1"
        d="M 1475.00,205.00
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             1472.95,341.22 1476.88,346.28 1481.01,347.99
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</svg>

我需要将字符串中的每个数字替换为可被70整除的最接近的数字。一旦这样做，很可能会有重复的路径，因此应该删除它们，直到只剩下一个。问题是我完全不知道如何在python中最好地实现这一点

对于第一部分，可能使用regex查找所有数字，并将每个数字替换为以下内容： round(n / 70) * 70

对于第二个问题，我还不确定6个数字的每一行是否等于另一整行，或者只是其中的一些数字