dmpython

library2.5.32pypypi✓ verified 86d ago

dmPython is the official Python interface to the Dameng database, designed to facilitate connections and operations following the Python DB API 2.0 specification. It enables Python applications to directly interact with Dameng databases. The library is actively maintained by Dameng Database and currently stands at version 2.5.32, with frequent updates addressing bug fixes and new features.

database

pip install dmpython

package ↗homepage ↗

INSTALL

IMPORT

SIG · DMPYTHON

dmpython

databasepythonv2.5.32

Install

2.6s avg

Import

10ms

Disk

44MB

Pass rate

5/ 10

Env Coverage5 / 10

glibc

3.9–3.13

musl

3.9–3.13

Install & Compatibility

Where this runs

tested against v2.5.32 · pip install

no network on importno background threads

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

py 3.10–3.920 runs

build_error

glibc

py 3.10–3.920 runs

installs and imports cleanly · install 2.6s · import 0.010s · 46MB

44MB installed

● package 44MB

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

dmPython

✓ import dmPython

This quickstart demonstrates how to establish a connection to a Dameng database, execute a simple query, fetch the result, and properly close the cursor and connection. Ensure you replace the placeholder connection details with your actual database credentials.

import dmPython import os # Replace with your actual Dameng database connection details user = os.environ.get('DM_USER', 'SYSDBA') password = os.environ.get('DM_PASSWORD', 'Dameng123') host = os.environ.get('DM_HOST', 'localhost') port = os.environ.get('DM_PORT', '5236') schema = os.environ.get('DM_SCHEMA', 'SCH1') connection_string = f'{user}/{password}@{host}:{port}/{schema}' try: conn = dmPython.connect(connection_string) cursor = conn.cursor() cursor.execute("SELECT SYSDATE FROM DUAL") result = cursor.fetchone() print(f"Current database time: {result[0]}") cursor.close() conn.close() except dmPython.DatabaseError as e: print(f"Database connection or query error: {e}")

Debug

Known issues

gotchaWhen installing dmPython from source (not via `pip install`), the Dameng Database software must be installed and the `DM_HOME` environment variable must be correctly set, as the source build depends on include headers from the DM installation directory.

fix

For source installation, ensure Dameng Database is installed and `DM_HOME` points to its installation directory. For easier installation, use `pip install dmpython` which typically uses pre-built wheels and avoids this requirement.

affects: All versions (when installing from source)

breakingOlder versions of `dmPython` (e.g., prior to 2.5.30) had known issues with multi-threaded concurrent connection release, which could lead to application instability. Similarly, versions before 2.5.26 experienced interruptions when using `executemany` with character data containing unidentifiable characters for the current encoding.

fix

Upgrade to `dmPython` version 2.5.30 or newer to benefit from fixes addressing multi-threading and `executemany` stability.

affects: < 2.5.30

gotchaBe aware that there is another distinct Python library named 'DM_Control_Python' which is used for controlling Damiao motors via CAN. Ensure you are importing and using 'dmPython' for Dameng database connectivity to avoid confusion and unexpected errors.

fix

Verify that your `import` statements and package installations specifically refer to `dmPython` for database operations.

affects: All versions

Errors

Common errors & fixes

dmPython.DatabaseError: [CODE:-70089]加密模块加载失败

The system's SSL encryption module does not meet the requirements, or the dmPython driver cannot locate the necessary SSL libraries.

fix

Update `libssl` to version 1.1 or higher. Alternatively, set the `LD_LIBRARY_PATH` (Linux) or `PATH` (Windows) environment variable to point to the `dmssl` directory located within the `dmPython` installation (e.g., `export LD_LIBRARY_PATH=/usr/local/lib/python3.13/site-packages/dmssl`).

pip install dmpython==2.4.5 fails

Specific older versions of dmPython, such as 2.4.5, have been removed from PyPI.

fix

Install the latest stable version of dmPython using `pip install dmpython` or specify a currently available version on PyPI.

Upgrade

Version history

2.5.32latest on PyPI · released Apr 13, 2026

Audit

Dependencies

Dameng Database Programmer's Interface (DPI)optionalRequired for compiling and installing dmPython from source. Not needed for pip installations using pre-built wheels.

libssl 1.1+requiredA compatible SSL encryption module is required to avoid encryption module loading failures.

Agent activity

63 hits · last 30 days

node

Resources

packagehttps://pypi.org/project/dmpython/ ↗

homepagehttps://www.dameng.com ↗