Helping reddit question: https://www.reddit.com/r/golang/comments/dqztt5/need_help_with_a_script/

main.go

package main

import "fmt"

func main() {

	intslice := [][]int{[]int{1}, []int{2}}

	// Grow
	for index, value := range intslice {
		value = append(value, 0)
		intslice[index] = value
	}

	insertion := []int{}
	for index := 0; index < len(intslice)+1; index++ {
		insertion = append(insertion, 0)

	}
	intslice = append(intslice, insertion)
	fmt.Println(intslice)

	// Shrink
	for index, value := range intslice {
		if len(value) == 0 {
			fmt.Println("Cant shrink below 0")
			continue
		}

		value = value[:len(value)-1]
		intslice[index] = value

		if index == len(intslice)-1 {
			intslice = intslice[:len(intslice)-1]

		}

	}

	fmt.Println(intslice)
}

main.py

# grows the list by list[len(list[n])+1][len(list[n][n])+1]
pythonlist = [[1], [2]]

for index, i in enumerate(pythonlist):
    pythonlist[index].append(0)
pythonlist.append([])
for i in range(len(pythonlist)):
    pythonlist[-1].append(0)


# Shrink
print(pythonlist)

# shrinks the list by list[len(list[n])-1][len(list[n][n])-1]
for index, i in enumerate(pythonlist):
    pythonlist[index].pop()
pythonlist.pop()

print(pythonlist)