问题记录：ValueError: fmt has wrong number of % formats: %8.3f %8.3f %8.3f

ValueError: fmt has wrong number of % formats: %8.3f %8.3f %8.3f

说明你输出的东西不匹配：

比如
a = []

np.savetxt(“test.txt”,a,fmt = “%8.3f %8.3f %8.3f”)

因为是空的，就没法进行保存时格式的匹配！！！