Add method UserHistory

[vazhnov]

Add method UserHistory(UserId) which returns all changesets for a user.

Usage example:

import pprint
import osmapi

api = osmapi.OsmApi()
history = api.UserHistory('Alexey%20Vazhnov')
pprint.pprint(history)

Other ways to fetch all changesets for a user:

• Web UI: https://www.openstreetmap.org/user/Alexey%20Vazhnov/history
• Manual API request: https://api.openstreetmap.org/api/0.6/changesets?display_name=Alexey%20Vazhnov

Closes https://help.openstreetmap.org/questions/23089/ 😄

How to test the code from the branch:

python3 -m venv venv
source venv/bin/activate
pip3 install 'git+https://github.com/vazhnov/osmapi.git@Add_UserHistory'
python3 ./examples/fetch_user_history.py --username 'My%20user' --loglevel WARNING --limit 90 --filename /tmp/MyHistory.json

Questions:

1. Should I use name user_history instead of UserHistory? Create a more "pythonic" API #39
2. Should I add to the docstring, that the method can do multiple API calls?
3. Should I add to the docstring, that limits/defaults, changesets maximum_elements and changesets default_query_limit can be received by capabilities() method from GET /api/capabilities?
4. Should I remove time.sleep from the code? I use it to reduce a peak load to the API server, but probably it is a premature optimization.

P.S.: I'm not a Python developer. Maybe my code is ugly and wrong — please write a comment or edit the code.

[metaodi]

@vazhnov I think the API already exists, it's ChangesetsGet, see this test for an example usage.

[vazhnov]

@metaodi , thank you for the clue!

I've checked ChangesetsGet — yes it is good, but it can return maximum 100 records.
My UserHistory returns everything (for example, for my user it fetches 5162 edits).

What do you think, should I try to improve ChangesetsGet so it will have similar logic with while need_fetch and calculating time_str_ruby as in https://github.com/vazhnov/osmapi/blob/Add_UserHistory/osmapi/OsmApi.py#L1209-L1231 , instead of writing a new function UserHistory?

Sorry for not responding quickly, it was pretty busy year.

[vazhnov]

@metaodi ?

[metaodi]

@vazhnov This library should be a thin wrapper, so I don't want to add a lot of extra methods for API functions that are a ready covered.

But I'm open to enhance the existing ChangesetsGet, but I would prefer a different approach: check if more records should be requested after each request. Similar to the DataLoader in one of my other projects.

[metaodi]

PR in #188