GSM modem module for Python forked in 2025
python-gsmmodem is a module that allows easy control of a GSM modem attached to the system. It also includes a couple of useful commandline utilities for interacting with a GSM modem.
Its features include:
- simple methods for sending SMS messages, checking signal level, etc
- easy-to-use API for starting and responding to USSD sessions and making voice calls
- handling incoming phone calls and received SMS messages via callback methods
- support for SMS PDU and text mode
- support for tracking SMS status reports
- wraps AT command errors into Python exceptions by default
- modular design; you easily issue your own AT commands to the modem (with error checking), or read/write directly from/to the modem if you prefer
- comprehensive test suite
Bundled utilities:
- GSMTerm: an easy-to-use serial terminal for communicating with an attached GSM modem. It features command completion, built-in help for many AT commands, history, context-aware prompt, etc.
- sendsms.py: a simple command line script to send SMS messages
- identify-modem.py: simple utility to identify attached modem. Can also be used to provide debug information used for development of python-gsmmodem.
How is this different than https://github.com/babca/python-gsmmodem?
It seems the python-gsmmodem-new repository is not maintained anymore. This fork is a copy of the last commit from the original repository, with some modifications. Specifically, I started this to handle SIM800 modem, which require xonxoff flow control to work properly.
Go to examples/ directory in this repo.
- Python 3.3 or later
- pySerial
There are multiple ways to install python-gsmmodem-2025 package:
pip install python-gsmmodem-2025
pip will automatically download and install
all dependencies, as required. You can also utilise easy_install in the
same manner as using pip above.
If you are utilising python-gsmmodem-2025 as part of another project,
add it to your install_requires section of your setup.py file and
upon your project's installation, it will be pulled in automatically.
Download a python-gsmmodem-2025 archive from PyPI, extract it and install the package with command:
python setup.py install
Note that python-gsmmodem-2025 package relies on pySerial for serial communications:
https://github.com/pyserial/pyserial
Clone from GitHub:
git clone https://github.com/babca/python-gsmmodem.git cd python-gsmmodem/ python setup.py install
Note that python-gsmmodem-2025 package relies on pySerial for serial communications:
https://github.com/pyserial/pyserial
To run all unit tests, do:
python setup.py test
Unit test code coverage information may be generated by using coverage. You can execute it directly from setup.py by doing:
python setup.py coverage
This will run all unit tests and report on code coverage statistics.
This package contains Sphinx-based documentation. To manually build or test the documentation locally, do the following:
git clone https://github.com/babca/python-gsmmodem.git cd python-gsmmodem pip install .[doc] cd doc make html
For true isolation, you may wish to run the above commands within a virtualenv, which will help you manage this development installation.
Copyright (C) 2013 Francois Aucamp See AUTHORS for all authors and contact information.
- License: GNU Lesser General Public License, version 3 or later; see COPYING
- included in this archive for details.
You can simply list all ttyUSB devices before and after pluging the modem in.
ls /dev/ttyUSB*
Check running processes. The device could be occupied by another program or another instance of gsmmodem which is still running in the background. Run sudo lsof | grep tty, try to locate the problematic process and sudo kill <PID>.