Adapt python code to updated ML software

[riga]

PR description

This PR adds some minimal changes to ML related python code in PhysicsTools/PythonAnalyses and PhysicsTools/TensorFlow that came up in the integration process of updated python packages in cms-sw/cmsdist#6649 which was merged yesterday.

Changes:

• One unit test in PhysicsTools/PythonAnalyses used an import that was working for Python2 but not for Python3. This is now fixed for both versions.
• The cmsml package was introduced in the linked PR and deprecates a few tools previously located in PhysicsTools/TensorFlow/python/tools.py. As far as I see, these tools were only used in the PhysicsTools/TensorFlow tests, which I updated accordingly.

PR validation

The unit tests of both packages are passing now.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-32942/21172

• This PR adds an extra 16KB to repository

[cmsbuild]

A new Pull Request was created by @riga (Marcel R.) for master.

It involves the following packages:

PhysicsTools/PythonAnalysis
PhysicsTools/TensorFlow

@perrotta, @jpata, @cmsbuild, @santocch, @slava77 can you please review it and eventually sign? Thanks.
@makortel this is something you requested to watch as well.
@silviodonato, @dpiparo, @qliphy you are the release manager for this.

cms-bot commands are listed here

[perrotta]

please test

[cmsbuild]

+1

Summary: https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-f1c825/12965/summary.html
COMMIT: 0a6d083
CMSSW: CMSSW_11_3_X_2021-02-18-1100/slc7_amd64_gcc900
User test area: For local testing, you can use /cvmfs/cms-ci.cern.ch/week0/cms-sw/cmssw/32942/12965/install.sh to create a dev area with all the needed externals and cmssw changes.

Comparison Summary

Summary:

• No significant changes to the logs found
• Reco comparison results: 9 differences found in the comparisons
• DQMHistoTests: Total files compared: 37
• DQMHistoTests: Total histograms compared: 2750983
• DQMHistoTests: Total failures: 11
• DQMHistoTests: Total nulls: 1
• DQMHistoTests: Total successes: 2750949
• DQMHistoTests: Total skipped: 22
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: -0.004 KiB( 36 files compared)
• DQMHistoSizes: changed ( 312.0 ): -0.004 KiB MessageLogger/Warnings
• Checked 156 log files, 37 edm output root files, 37 DQM output files

[jpata]

+reconstruction

• removes some testing code which now lives in an external package
• nothing relevant is changed for the reco tests as expected

[silviodonato]

merge

[santocch]

+1

[cmsbuild]

This pull request is fully signed and it will be integrated in one of the next master IBs (tests are also fine). This pull request will be automatically merged.