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Numpy array 儲存or讀取 CSV 檔案
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import numpy
a = numpy.asarray([ [1,2,3], [4,5,6], [7,8,9] ])
# 存檔
numpy.savetxt("test.csv", a,fmt="%.0f", delimiter=",")
#讀取
get = numpy.loadtxt(open("test.csv","rb"), delimiter=",", skiprows=0)
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