The simple script to replace empty value in json to null

remove_empty_string.py

def remove_empty_string(dic):
    """
    Replace empty string to None
    """
    for e in dic:
        if isinstance(dic[e], dict):
            dic[e] = remove_empty_string(dic[e])
        if (isinstance(dic[e], str) and dic[e] == ""):
            dic[e] = None
        if isinstance(dic[e], list):
            for entry in dic[e]:
                remove_empty_string(entry)
    return dic