Py2to3: use builtin int for py2 - py3 compatibility

[mrodozov]

PR description:

Change long with int:
https://docs.python.org/3/whatsnew/3.0.html#integers
first answer on SO about that
Not sure if int is acceptable the way we are running now.
If not I can put version check condition

PR validation:

Runs with both py2 and 3

[mrodozov]

please test

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-28083/12057

• This PR adds an extra 16KB to repository

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/2707/console Started: 2019/09/27 18:16

[cmsbuild]

A new Pull Request was created by @mrodozov (Mircho Rodozov) for master.

It involves the following packages:

DataFormats/FWLite

@cmsbuild, @smuzaffar, @Dr15Jones can you please review it and eventually sign? Thanks.
@makortel, @rovere, @wddgit this is something you requested to watch as well.
@davidlange6, @slava77, @fabiocos you are the release manager for this.

cms-bot commands are listed here

[cmsbuild]

+1
Tested at: 51925d9
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-a4e3cd/2707/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-a4e3cd/2707/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 4 differences found in the comparisons
• DQMHistoTests: Total files compared: 34
• DQMHistoTests: Total histograms compared: 2958092
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2957749
• DQMHistoTests: Total skipped: 341
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 33 files compared)
• Checked 145 log files, 15 edm output root files, 34 DQM output files

[Dr15Jones]

Given the entry number can be very large, I would guess this will not work always with python 2

[cmsbuild]

The code-checks are being triggered in jenkins.

[cmsbuild]

+code-checks

Logs: https://cmssdt.cern.ch/SDT/code-checks/cms-sw-PR-28083/12123

• This PR adds an extra 20KB to repository

[cmsbuild]

Pull request #28083 was updated. @cmsbuild, @smuzaffar, @Dr15Jones can you please check and sign again.

[Dr15Jones]

please test

[cmsbuild]

The tests are being triggered in jenkins.
https://cmssdt.cern.ch/jenkins/job/ib-run-pr-tests/2775/console Started: 2019/10/03 16:20

[cmsbuild]

+1
Tested at: a0cec1d
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-a4e3cd/2775/summary.html

[cmsbuild]

Comparison job queued.

[cmsbuild]

Comparison is ready
https://cmssdt.cern.ch/SDT/jenkins-artifacts/pull-request-integration/PR-a4e3cd/2775/summary.html

Comparison Summary:

• No significant changes to the logs found
• Reco comparison results: 2 differences found in the comparisons
• DQMHistoTests: Total files compared: 34
• DQMHistoTests: Total histograms compared: 2961049
• DQMHistoTests: Total failures: 2
• DQMHistoTests: Total nulls: 0
• DQMHistoTests: Total successes: 2960706
• DQMHistoTests: Total skipped: 341
• DQMHistoTests: Total Missing objects: 0
• DQMHistoSizes: Histogram memory added: 0.0 KiB( 33 files compared)
• Checked 147 log files, 16 edm output root files, 34 DQM output files

[Dr15Jones]

+1
please change the pull requests title since it no longer reflects what was done.

[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 now be reviewed by the release team before it's merged. @davidlange6, @slava77, @smuzaffar, @fabiocos (and backports should be raised in the release meeting by the corresponding L2)

[fabiocos]

+1

@Dr15Jones I updated the title to reflect what has been the finally adopted solution