micropg

PostgreSQL database driver for MicroPython

26
3
Python

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micropg

PostgreSQL database driver for Python and MicroPython.

Installation

Python
+++++++++++++++

::

pip install micropg

MicroPython
+++++++++++++++

Go interactive shell and install with mip as follow.
::

import mip
mip.install(“https://github.com/nakagami/micropg/blob/master/micropg.py”)

Example

You find more examples in the examples <https://github.com/nakagami/micropg/tree/master/examples>_ folder.

Query::

import micropg
conn = micropg.connect(host=‘127.0.0.1’,
user=‘postgres’,
password=‘secret’,
database=‘database_name’,
use_ssl=False)
cur = conn.cursor()

cur.execute(‘select foo, bar from baz’)
for r in cur.fetchall():
print(r[0], r[1])

execute with parameter

cur.execute('select foo, bar from baz where name=%s ', [‘nakagami’])
for r in cur.fetchall():
print(r[0], r[1])

conn.close()

Restrictions and Unsupported Features

  • If installed in Python, it can only handle types supported by MicroPython.
  • Supported Authentication METHOD are only ‘trust’, ‘md5’ and ‘scram-sha-256’.
  • Not support for array data types.
  • Not support for prepared statements.

If you use md5 authentication METHOD, you may need a patch
https://github.com/nakagami/micropg/issues/2

For CPython

I also wrote a pure Python driver.
https://github.com/nakagami/minipg