1>>> import js2py
2>>> f = js2py.eval_js('function f(x) {return x + x}')
3>>> f(2)
44
5>>> f()
6nan
7>>> f(f)
8function f(x) { [python code] }function f(x) { [python code] }

1function solution(arr) {
2  if (arr && arr.length > 0) {
3    let visitedNum = new Set();
4
5    let result = arr.every((num) => {
6      if (visitedNum.has(num - 1) || visitedNum.has(num + 1)) {
7        return 0;
8      }
9
10      visitedNum.add(num);
11
12      return 1;
13    });
14
15    return !result;
16  }
17
18  return 0;
19}

1def numberOfSubArray(arr):
2    data = {}
3    n = len(arr)
4    maxAmount = 1
5    for i in range(1, n + 1):
6        for j in range(i):
7            s = sum(arr[j:i])
8            if s not in data:
9                data[s] = [i - 1, 1]
10            elif data[s][0] < j:
11                data[s][1] += 1
12                if data[s][1] > maxAmount: maxAmount = data[s][1]
13                data[s][0] = i - 1
14
15    return maxAmount