code: def make_rectangle(arr, x0, y0, x1, y1):
      arr[y0:y1, x0] = 1
      arr[y0:y1, x1] = 1
      arr[y0, x0:x1] = 1
      arr[y1, x0 : x1 + 1] = 1
  
file_path: GPflow/doc/sphinx/notebooks/advanced/convolutional.pct.py
imports: import time
  import matplotlib.pyplot
  import numpy
  import tensorflow
  import tensorflow_probability
  import gpflow
  from gpflow import set_trainable
  from gpflow.ci_utils import is_continuous_integration
label_desc: Use image node_id 2 for calling a global function with example usage: make_rectangle(arr, x0, y0, x1, y1) without return types