3. Write and test the following function: 1 def open_triangle_print(rows): Add the function to a PyDev module named functions.py. Test it from t03.py. open_triangle takes an integer parameter and prints a triangle of # characters with an empty center. Provide the function docstring (documentation) following the CP104 style. The function must use a loop. The function does not ask for input. Sample execution: open_triangle_print (3) in# i# # i # Test the function with three different sets of parameters..