Unable to use Graphviz library in Python - python-3.x

Question

Here is the code I try to execute:
from graphviz import Graph
# Instantiate a new Graph object
dot = Graph('Data Science Process', format='png')
# Add nodes
dot.node('A', 'Get Data')
dot.node('B', 'Clean, Prepare, & Manipulate Data')
dot.node('C', 'Train Model')
dot.node('D', 'Test Data')
dot.node('E', 'Improve')
# Connect these nodes
dot.edges(['AB', 'BC', 'CD', 'DE'])
# Save chart
#dot.render('data_science_flowchart', view=True)
The render function won't work, and I have not idea what is wrong. If commented out, the code works, but of course produces nothing. My goal is to make a visualization of the graph (PNG image, or PDF file). Just trying to plot a rudimentary flowchart in Python, I am open to using other libraries than graphviz: I am new to this, and tried graphviz after reading recommendations, tested a dozen scripts posted online, but none of them work, always resulting in the same error.
Here is the error:
$ py graph2.py
py graph2.py
Traceback (most recent call last):
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\backend\execute.py", line 81, in run_check
proc = subprocess.run(cmd, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 501, in run
with Popen(*popenargs, **kwargs) as process:
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 966, in __init__
self._execute_child(args, executable, preexec_fn, close_fds,
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\subprocess.py", line 1435, in _execute_child
hp, ht, pid, tid = _winapi.CreateProcess(executable, args,
FileNotFoundError: [WinError 2] The system cannot find the file specified
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "C:\Users\vince\graph2.py", line 17, in <module>
dot.render('data_science_flowchart', view=True)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\_tools.py", line 171, in wrapper
return func(*args, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\rendering.py", line 122, in render
rendered = self._render(*args, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\_tools.py", line 171, in wrapper
return func(*args, **kwargs)
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\backend\rendering.py", line 324, in render
execute.run_check(cmd,
File "C:\Users\vince\AppData\Local\Programs\Python\Python310\lib\site-packages\graphviz\backend\execute.py", line 84, in run_check
raise ExecutableNotFound(cmd) from e
graphviz.backend.execute.ExecutableNotFound: failed to execute WindowsPath('dot'), make sure the Graphviz executables are on your systems' PATH