Python list method vs. JavaScript Array method

javascript-array-method.js

a = [1]
a
a.push(2)
a
a[a.length] = 9
a
a = a.concat([4, 5])
a
a.splice(a.length, 0, 5, 6, 7)
a
a.splice(1, 0, 0)
a
a.splice(a.length - 1, 0, 8)
a
a.splice(a.indexOf(9), 1)
a
a.pop()
a
((ary, value) => { return ary.reduce((count, item) => {return item == value ? count + 1 : count}, 0) })(a, 5);
a.indexOf(5)
a
a.reverse()
a
a.sort()
a
b = a.slice()
b
a.length = 0;
a
a = b
a
a.splice(0, a.length)
a

python-list-method.py

a = [1]
a
a.append(2)
a
a[len(a):] = [9]
a
a.extend(range(4, 6))
a
a[len(a):] = range(5, 8)
a
a.insert(1, 0)
a
a.insert(len(a) - 1, 8)
a
a.remove(9)
a
a.pop()
a
print(a.count(5))
a.index(5)
a
a.reverse()
a
a.sort()
a
b = a.copy()
b
a.clear()
a
a = b
a
del a[:]
a

https://agvim.wordpress.com/2017/08/22/python-list-vs-javascript-array/