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pythonのnumpy.zerosで”TypeError: data type not understood”が出るときの対処

Last updated at Posted at 2020-05-05
import numpy as np
n_mat = np.zeros(20, 20)

とすると,エラーがでる.

実行結果

      1 import numpy as n
----> 2 n_mat = np.zeros(20, 20)

TypeError: data type not understood

これは,次のようにすると回避できる.

import numpy as np
n_mat = np.zeros((20, 20))

つまり,zerosの引数はコンマ区切りではなく,タプル形式として入力する必要がある.
本当にしょうもない記事ではあるが,元MATLAB使いの私はこれで5分程度悩んだので,戒めとして記録しておく.

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