Typing / Protocol for DBAPI-compatible connections and cursors
John Stevenson - BGS <[email protected]> Fri, 2 Dec 2022 17:47:46 +0000
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Hi,
Is there a way to do type hints for a generic DBAPI-compatible connection a=
nd cursor? Our ETL Helper tool uses cx_Oracle, psycopg2 and sqlite3 connec=
tions interchangeably and it would be useful to have a generic type instead=
explicitly using the classes from each driver.
As far as I can see from Google, one way to achieve this would by using Pro=
tocols, as defined in PEP 544 (https://peps.python.org/pep-0544/). Is ther=
e an "official" PEP 249 DBA API 2.0 protocol anywhere?
Thanks,
John
p.s. ETL Helper is a library we developed to make it easier for our DBAs to=
use Python to transfer data. https://pypi.org/project/etlhelper/
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<p class=3D"MsoNormal">Hi,<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">Is there a way to do type hints for a generic DBAPI-=
compatible connection and cursor? Our ETL Helper tool uses cx_Oracle,=
psycopg2 and sqlite3 connections interchangeably and it would be useful to=
have a generic type instead explicitly
using the classes from each driver.<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">As far as I can see from Google, one way to achieve =
this would by using Protocols, as defined in PEP 544 (<a href=3D"https://pe=
ps.python.org/pep-0544/">https://peps.python.org/pep-0544/</a>). Is t=
here an “official” PEP 249 DBA API 2.0 protocol
anywhere?<br>
<br>
Thanks,<o:p></o:p></p>
<p class=3D"MsoNormal">John<o:p></o:p></p>
<p class=3D"MsoNormal"><o:p> </o:p></p>
<p class=3D"MsoNormal">p.s. ETL Helper is a library we developed to make it=
easier for our DBAs to use Python to transfer data.
<a href=3D"https://pypi.org/project/etlhelper/">https://pypi.org/project/et=
lhelper/</a><o:p></o:p></p>
</div>
<br>
<br>
This email and any attachments are intended solely for the use of the named=
recipients. If you are not the intended recipient you must not use, disclo=
se, copy or distribute this email or any of its attachments and should noti=
fy the sender immediately and delete
this email from your system. UK Research and Innovation (UKRI) has taken e=
very reasonable precaution to minimise risk of this email or any attachment=
s containing viruses or malware but the recipient should carry out its own =
virus and malware checks before
opening the attachments. UKRI does not accept any liability for any losses=
or damages which the recipient may sustain due to presence of any viruses.=
<br>
<br>
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