d">def</span> <span class="hljs-title">sep_bn</span><span class="hljs-params">(x, filters, kernel_size, strides=<span class="hljs-number">1</span>)</span>:</span>
    x = SeparableConv2D(filters=filters,
                        kernel_size=kernel_size,
                        strides=strides,
                        padding=<span class="hljs-string">'same'</span>,
                        use_bias=<span class="hljs-keyword">False</span>)(x)
    x = BatchNormalization()(x)
    <span class="hljs-keyword">retur