pyrtcm

library1.1.12pypypi✓ verified 86d ago

PyRTCM is a RTCM3 protocol parser and generator for Python. Version 1.1.12 supports Python >=3.10. It provides classes for reading, writing, and manipulating RTCM3 messages, commonly used in GNSS applications. Release cadence is irregular.

serialization data http-networking

pip install pyrtcm

github ↗package ↗docs ↗changelog ↗

INSTALL

IMPORT

SIG · PYRTCM

pyrtcm

serializationpythonv1.1.12

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

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

RTCMReader

✓ from pyrtcm import RTCMReader

✗ from pyrtcm.rtcm import RTCMReader

RTCMReader is exported at package level, not from submodule rtcm.

RTCMMessage

✓ from pyrtcm import RTCMMessage

Correct import for message object.

RTCMStream

✓ from pyrtcm import RTCMStream

✗ from pyrtcm.stream import RTCMStream

RTCMStream is exported at package level.

Basic usage: create an RTCMReader from bytes and iterate over messages.

from pyrtcm import RTCMReader # Read from a binary string data = b'\xd3\x00...' # RTCM3 raw bytes rtr = RTCMReader(data) for (raw, parsed) in rtr: if parsed: print(parched.identity) print(parched)

Debug

Known issues

gotchaRTCMReader expects bytes, not str. Passing a string will raise TypeError or silently fail.

fix

Use bytes or a bytes-like object. If reading from a file, open in binary mode.

affects: all

gotchaRTCMReader is an iterator that yields tuples (raw_bytes, parsed_message). The second element can be None if parsing fails. Always check parsed is not None before accessing attributes.

fix

Iterate as: for raw, parsed in reader: if parsed: ...

affects: all

gotchaOnly RTCM3 messages are supported; previous versions (RTCM2) are not handled. Attempting to parse RTCM2 data will result in errors.

fix

Ensure input data conforms to RTCM3 standard (0xD3 sync byte).

affects: all

gotchaWhen installing via pip, ensure wheel is available. On some platforms missing wheel may cause compilation issues for the C extension.

fix

Install wheel: pip install wheel, then retry pip install pyrtcm.

affects: >=1.0.0

Errors

Common errors & fixes

TypeError: a bytes-like object is required, not 'str'

Passing a string instead of bytes to RTCMReader.

fix

Encode the string to bytes: data = data_str.encode('latin-1') or open file in binary mode 'rb'.

pyrtcm.exceptions.RTCMStreamError: something went wrong

Malformed RTCM data or incomplete stream (e.g., missing sync byte).

fix

Ensure the data is a valid RTCM3 stream starting with 0xD3. Use RTCMReader with proper bytes input.

ImportError: cannot import name 'RTCMReader'

Older version of pyrtcm (<1.0) may have different API. Or installed package is incomplete.

fix

Upgrade to latest version: pip install --upgrade pyrtcm. Check import path: from pyrtcm import RTCMReader.

AttributeError: 'NoneType' object has no attribute 'identity'

Attempting to access parsed message attributes when parsed is None (parsing failed).

fix

Always check if parsed is not None before accessing attributes.

Upgrade

Version history

1.1.12latest on PyPI · released Mar 21, 2026

Audit

Dependencies

No dependency data recorded yet.

Agent activity

14 hits · last 30 days

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Resources

githubhttps://github.com/semuconsulting/pyrtcm ↗

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

docshttps://www.semuconsulting.com/pyrtcm/ ↗

changeloghttps://github.com/semuconsulting/pyrtcm/blob/master/RELEASE_NOTES.md ↗