class_docstr: Expand_dim is an improved layer to suuport 1D input.
  For example, if we get an 1D input with shape(3),
  we will return the shape(1, 3) after we use expand_dim(0, input).
  # Arguments
  dim: The specified axis to expand dimension on.
  input_shape: A shape tuple, not including batch.
  
  >>> expandDim = ExpandDim(dim=0, input_shape=(3, 2))
  creating: createZooKerasExpandDim
class_docstr_tok: ["Expand_dim","is","an","improved","layer","to","suuport","1D","input",".","For","example",",","if","we","get","an","1D","input","with","shape","(","3",")",",","we","will","return","the","shape","(","1",",","3",")","after","we","use","expand_dim","(","0",",","input",")",".","#","Arguments","dim",":","The","specified","axis","to","expand","dimension","on",".","input_shape",":","A","shape","tuple",",","not","including","batch",".",">",">",">","expandDim","=","ExpandDim","(","dim=0",",","input_shape=","(","3",",","2",")",")","creating",":","createZooKerasExpandDim"]
code: def __init__(self, dim, input_shape=None, **kwargs):
      super(ExpandDim, self).__init__(
          None,
          dim,
          list(input_shape) if input_shape else None,
          **kwargs,
      )
  
imports: import sys
  from bigdl.dllib.utils.common import INTMIN
  from ..engine.topology import ZooKerasLayer
label_desc: Use image node_id 1 to create a new ExpandDim object from inherited base classes: ZooKerasLayer with example: obj = ExpandDim(dim, input_shape)