recviz

Simple and easy visualization for recursive functions in Python.

Installing recviz

pip install recviz

Usage

from recviz import recviz


@recviz
def fib(n):
  # base condition mimicking the first two numbers
  # in the sequence
  if n == 0: return 0
  if n == 1: return 1

  # every number is summation of the previous two
  return fib(n - 1) + fib(n - 2)


fib(3)

Upon decorating and invoking the function, the output is

  -> fib(3)
    -> fib(2)
       -> fib(1)
       <- 1
       -> fib(0)
       <- 1
    <- 2
    -> fib(1)
    <- 1
 <- 3