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Numpy——1. Creation of array

2022-07-05 07:35:00 【Hair will grow again without it】

Create array

np.array(object, dtype) or np.arange(start, stop, step, dtype)

object： The object of the created array , Can be a single value , list , Cell, etc .
example：
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dtype: data type

  1. Specify the data type
    example：
    Insert picture description here
    Insert picture description here 2. Adjust the data type
    a.astype("i1")
    Insert picture description here 3. Modify the number of floating-point numbers
    np.round(array, d)
    Insert picture description here
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