-
numpy.append(arr, values, axis=None)
[source] -
Append values to the end of an array.
Parameters: arr : array_like
Values are appended to a copy of this array.
values : array_like
These values are appended to a copy of
arr
. It must be of the correct shape (the same shape asarr
, excludingaxis
). Ifaxis
is not specified,values
can be any shape and will be flattened before use.axis : int, optional
The axis along which
values
are appended. Ifaxis
is not given, botharr
andvalues
are flattened before use.Returns: append : ndarray
A copy of
arr
withvalues
appended toaxis
. Note thatappend
does not occur in-place: a new array is allocated and filled. Ifaxis
is None,out
is a flattened array.Examples
>>> np.append([1, 2, 3], [[4, 5, 6], [7, 8, 9]]) array([1, 2, 3, 4, 5, 6, 7, 8, 9])
When
axis
is specified,values
must have the correct shape.>>> np.append([[1, 2, 3], [4, 5, 6]], [[7, 8, 9]], axis=0) array([[1, 2, 3], [4, 5, 6], [7, 8, 9]]) >>> np.append([[1, 2, 3], [4, 5, 6]], [7, 8, 9], axis=0) Traceback (most recent call last): ... ValueError: arrays must have same number of dimensions
numpy.append()
2017-01-10 18:12:38
Please login to continue.