extract specific data from a group of json-files

[ledgreve]

Hi @DeaD_EyE! Thank you for helping me!
where do I need to put my file to open it? Right now it's situated in my documents, but when I tried to open it, I received following error:

Error:
---------------------------------------------------------------------------
FileNotFoundError                         Traceback (most recent call last)
<ipython-input-1-b22700e301c2> in <module>
      1 import json
      2 
----> 3 with open('2015-05-14_16-35-57_UTC_janedoe.json') as fd:
      4     data=jsonloafs(fd)

FileNotFoundError: [Errno 2] No such file or directory: '2015-05-14_16-35-57_UTC_janedoe.json'