# numpy.trim_zeros

numpy.trim_zeros(filt, trim='fb')

  Trim the leading and/or trailing zeros from a 1-D array or sequence.

  Parameters
    filt 1-D array or sequence

      Input array.

    trim str, optional

      A string with ‘f’ representing trim from front and ‘b’ to trim from back. Default is ‘fb’, trim zeros from both front and back of the array.

  Returns
    trimmed 1-D array or sequence

      The result of trimming the input. The input data type is preserved.

  Examples

      >>> a = np.array((0, 0, 0, 1, 2, 3, 0, 2, 1, 0))
      >>> np.trim_zeros(a)
      array([1, 2, 3, 0, 2, 1])

      >>> np.trim_zeros(a, 'b')
      array([0, 0, 0, ..., 0, 2, 1])

  The input data type is preserved, list/tuple in means list/tuple out.

      >>> np.trim_zeros([0, 1, 2, 0])
      [1, 2]

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