A toy to visualize recursive function calls

	A toy to visualize recursive function calls
	2024-06-29
	Last edit: 2024-06-29
	---------------------

	Recently, I did a little project in
	Python
	to visualise function calls, especially recursive functions.

	It takes the form of a
	Python
	decorator applied to the desired functions. The data structure used is fairly …

	To generate a visual and have an overview of all the function calls, I used
	Graphviz
	to manage a graph and save it as a file (DOT, SVG, PNG, etc.).

	The decorator also supports memoization, which can also be represented on the f…

	## How is it used?

	These are two clear examples of how the decorator is used.

	```python
	from callviz.core import callviz, set_output_dir

	set_output_dir("out")

	@callviz(
	_format="png",
	memoization=True,
	open_file=True,
	show_node_result=True,
	)
	def fib(n: int):
	if n < 2:
	return n

	return fib(n - 2) + fib(n - 1)

	@callviz(_format="png", show_link_value=False)
	def rev(arr, new):
	if arr == []:
	return new

	return rev(arr[1:], [arr[0]] + new)

	fib(5)
	rev(list(range(6, 0, -1)), [])
	```

	## Links

	https://github.com/theobori/callviz