Modernizing legacy Python applications at LCLS

Between the start of LCLS in 2009 and Python 2’s end of life status in 2020, many control system tools and user interfaces were created using home-built Python 2 environments. With the end of official support for Python 2 comes a host of maintenance issues for all the legacy applications that survive to this day. This poster will contain techniques for modernizing these applications, common pain points in Python 2 to 3 conversions, and advice for testing and redeployment with recent examples from LCLS.

Publication Details

Journal
JACOW
Published
2025-12-05
DOI
https://doi.org/10.18429/jacow-icalepcs2025-wepd055
Primary Topic
Computational Physics and Python Applications
Type
article
Field-Weighted Citation Impact
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article

Modernizing legacy Python applications at LCLS

JACOW
Computational Physics and Python Applications
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Modernizing legacy Python applications at LCLS

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Abstract

Between the start of LCLS in 2009 and Python 2’s end of life status in 2020, many control system tools and user interfaces were created using home-built Python 2 environments. With the end of official support for Python 2 comes a host of maintenance issues for all the legacy applications that survive to this day. This poster will contain techniques for modernizing these applications, common pain points in Python 2 to 3 conversions, and advice for testing and redeployment with recent examples from LCLS.

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Computational Physics and Python Applications
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