gistfile1.txt

from flatten_json import flatten
import json

print("> Open File")
file = open("FILEPATH","r")
print("> Print File")
data = file.read()
print("> Load json from file")
translationDict = json.loads(data)
print("> Flatten")
flattenedData = flatten(translationDict, '.')

maxLength = 0

for data in flattenedData:
    dataLen = len(data)
    if maxLength < dataLen:
        # print("%d is bigger than last %d" % (dataLen, maxLength))
        maxLength = dataLen
    else:
        # print("%d is less than last %d" % (dataLen, maxLength))

print(maxLength)