dapla-statbank-client 1.0.0

Handles data transfer Statbank <-> Dapla for Statistics Norway

dapla-statbank-client

Used internally by SSB (Statistics Norway). Validates and transfers data from Dapla to Statbank. Gets data from public and internal statbank.

Installing from Pypi with Poetry

If your project has been set up with ssb-project create, navigate into the folder with the terminal. cd project-name. Then install the package:

poetry add dapla-statbank-client
ssb-project build

Make a notebook with the project's kernel, try this code to verify that you can "log in":

from statbank import StatbankClient
stat_client = StatbankClient(loaduser = "LASTEBRUKER")
# Change LASTEBRUKER to your load-statbank-username
# Fill out password
# Default publishing-date is TOMORROW
print(stat_client)
# Printing will show you all the default settings on the client.
# You can change for example date by specifying it: StatbankClient(loaduser = "LASTEBRUKER", date="2023-02-16")

Be aware that from the dapla staging environment you will be sending to statbank-TEMP-database, your changes will not be published. But if you are in the main dapla-jupyterlab (prod), you WILL publish to statbanken, in the PROD database. So pay extra attention to the publishing-date when in dapla-main-prod-jupyterlab.

Usage Transferring

stat_client.transfer({"deltabellfilnavn.dat" : df_06399}, "06339")

The simplest form of usage, is directly-transferring using the transfer-method under the client-class. The statbanktable expects named "deltabeller" in a dictionary, see trasferdata_template() below. This might be all you need if this data has been sent in the same shape to statbanken before... If you are unsure at all, keep reading.

Building datasets

You can look at the "filbeskrivelse" which is returned from stat_client.get_description() in its own local class: StatbankUttrekksBeskrivelse

description_06339 = stat_client.get_description(tableid="06339")
print(description_06339)

This should have all the information you are used to reading out from the old "Filbeskrivelse". And describes how you should construct your data.

Your data must be placed in a datastructure, a dict of pandas dataframes. Take a look at how the dict should be constructed with:

description_06339.transferdata_template()

This both returns the dict, and prints it, depending on what you want to do with it. Use it to insert your own DataFrames into, and send it to .validate() and/or .transfer(). It might look like this:

{"deltabellfilnavn.dat" : df_06399}

Other interesting attributes can be retrieved from the UttrekksBeskrivelse-object:

description_06339.subtables
description_06339.variables
description_06339.codelists
description_06339.suppression

After starting to construct your data, you can validate it against the Uttrekksbeskrivelse, using the validate-method, without starting a transfer, like this:

stat_client.validate({"deltabellfilnavn.dat" : df_06399}, tableid="06339")

Validation will happen by default on user-side, in Python. Validation happens on the number of tables, number of columns, code usage in categorical columns, code usage in "suppression-columns" (prikkekolonner), and on timeformats (both length and characters used) and more. This might be a lot of feedback, but understanding this will help you to debug what might be wrong with your data, before sending it in. If your data contains floats, it might hint at you to use the .round_data()-method to prepare your data, it uses the amount of decimals defined in UttrekksBeskrivelse to round UPWARDS (from pure 0.5 values) and convert to strings with comma as the decimal sign along the way, it is used like this:

data_dict_06339 = description_06339.round_data({"deltabellfilnavn.dat" : df_06399})

Getting apidata

These functions can be imported directly and will then not ask for username and password, but are also available through the client...

from statbank import apidata_all, apidata, apidata_rotate

df_06339 = apidata_all("06339", include_id=True)

apidata_all, does not need a specified query, it will build its own query, trying to get all the data from the table. This might be too much, resulting in an error.

The include_id-parameter is a bit magical, it gets both codes and value-columns for categorical columns, and tries to merge these next to each other, it also makes a check if the content is the same, then it will not include the content twice.

If you want to specify a query, to limit the response, use the method apidata instead.
Here we are requesting an "internal table" which only people at SSB have access to, with a specified URL and query.

query = {'query': [{'code': 'Region', 'selection': {'filter': 'vs:Landet', 'values': ['0']}}, {'code': 'Alder', 'selection': {'filter': 'vs:AldGrupp19', 'values': ['000', '001', '002', '003', '004', '005', '006', '007', '008', '009', '010', '011', '012', '013', '014', '015', '016', '017', '018', '019', '020', '021', '022', '023', '024', '025', '026', '027', '028', '029', '030', '031', '032', '033', '034', '035', '036', '037', '038', '039', '040', '041', '042', '043', '044', '045', '046', '047', '048', '049', '050', '051', '052', '053', '054', '055', '056', '057', '058', '059', '060', '061', '062', '063', '064', '065', '066', '067', '068', '069', '070', '071', '072', '073', '074', '075', '076', '077', '078', '079', '080', '081', '082', '083', '084', '085', '086', '087', '088', '089', '090', '091', '092', '093', '094', '095', '096', '097', '098', '099', '100', '101', '102', '103', '104', '105', '106', '107', '108', '109', '110', '111', '112', '113', '114', '115', '116', '117', '118', '119+']}}, {'code': 'Statsbrgskap', 'selection': {'filter': 'vs:Statsborgerskap', 'values': ['000']}}, {'code': 'Tid', 'selection': {'filter': 'item', 'values': ['2022']}}], 'response': {'format': 'json-stat2'}}

df_folkemengde = apidata("https://i.ssb.no/pxwebi/api/v0/no/prod_24v_intern/START/be/be01/folkemengde/Rd0002Aa",
                                     query,
                                     include_id = True
                                    )

apidata_rotate is a thin wrapper around pivot_table. Stolen from: https://github.com/sehyoun/SSB_API_helper/blob/master/src/ssb_api_helper.py

df_folkemengde_rotert = apidata_rotate(df_folkemengde, 'tidskolonne', "verdikolonne")

Using a date-widget for publish day

For easier setting of the date on the client, after it has been initialized, you can use a date-picker in JupyterLab from ipywidgets.

date = stat_client.date_picker()
date
# Do a cell shift here, run the cell above and then change the date, dont run the cell again
# When this is then run, it should update the date on the client:
stat_client.set_publish_date(date)

Saving and restoring Uttrekksbeskrivelser and Transfers as json

From stat_client.transfer() you will recieve a StatbankTransfer object, from stat_client.get_description a StatbankUttrekksBeskrivelse-object. These can be serialized and saved to disk, and later be restored, maybe this can be a form of logging on which transfers were done?

filbesk_06339 = stat_client.get_description("06339")
filbesk_06339.to_json("path.json")
# Later the file can be restored with
filbesk_06339_new = stat_client.read_description_json("path.json")

Some deeper data-structures, like the dataframes in the transfer will not be serialized and stored with the transfer-object in its json.

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Version history

• 1.0.0 Finished going through initial issues, less complaining from verify on floats
• 0.0.11 Statbank people wanted a user-agent-requesst-header to differentiate test from prod
• 0.0.9 After further user-testing and requests
• 0.0.5 Still some parameter issues
• 0.0.4 More test coverage, some bugs fixed in rounding checks and parameter-passing
• 0.0.3 Removed batches, stripping uttrekk from transfer, rounding function on uttrekk, data required in as a dict of dataframes, with "deltabell-navn". Tableid now works to transfer to instead of only "hovedtabellnavn"
• 0.0.2 Starting alpha, fine-tuning release to Pypi on github-release
• 0.0.1 Client, transfer, description, apidata. Quite a lot of work done already. Pre-alpha.