Breaking python's json parser. Trying to find the smallest valid json object that python's default json module cannot parse.

deep_json_array.py

#!/usr/bin/env python3
import json

# Dichotomic search of the deepest parsable json array that python can parse
(m,M) = (0, int(1e6))
while m+1<M:
    middle = (m+M)//2
    try:
        json.loads('[' * middle + ']' * middle)
        m = middle
    except RecursionError:
        M = middle
print(M)