numpy.ones
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numpy.ones(shape, dtype=None, order='C')
[source] -
Return a new array of given shape and type, filled with ones.
- Parameters
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shapeint or sequence of ints
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Shape of the new array, e.g.,
(2, 3)
or2
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dtypedata-type, optional
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The desired data-type for the array, e.g.,
numpy.int8
. Default isnumpy.float64
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order{‘C’, ‘F’}, optional, default: C
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Whether to store multi-dimensional data in row-major (C-style) or column-major (Fortran-style) order in memory.
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- Returns
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outndarray
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Array of ones with the given shape, dtype, and order.
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See also
Examples
>>> np.ones(5) array([1., 1., 1., 1., 1.])
>>> np.ones((5,), dtype=int) array([1, 1, 1, 1, 1])
>>> np.ones((2, 1)) array([[1.], [1.]])
>>> s = (2,2) >>> np.ones(s) array([[1., 1.], [1., 1.]])
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https://numpy.org/doc/1.19/reference/generated/numpy.ones.html