Resolve DeprecationWarning: Seeding based on hashing

[bmos]

When calling randomtable without providing a seed, the warning DeprecationWarning: Seeding based on hashing is deprecated since Python 3.9 and will be removed in a subsequent version. The only supported seed types are: None, int, float, str, bytes, and bytearray. is emitted.

This actually becomes a TypeError in 3.11 and 3.12.

closes #657

It also seems like we don't even need to provide a seed based on the documentation, but I stuck to the way it was implemented before (using a hashed version of the date). 2.7: https://docs.python.org/2.7/library/random.html#random.seed 3.12: https://docs.python.org/3.12/library/random.html#random.seed

I also noticed that the filename utils/random.py seems to be conflicting with python's random module. When debugging the doctests in that file, I had to rename it.

Changes

• Add unit tests for randomtable, dummytable, and their supporting functions and classes and updated their doctests to pass.
• Fix: DeprecationWarning: Seeding based on hashing is deprecated since Python 3.9 and will be removed in a subsequent version.

Checklist

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• [x] Source Code guidelines:
  • [x] Includes unit tests
  • [x] New functions have docstrings with examples that can be run with doctest
  • [x] New functions are included in API docs
  • [x] Docstrings include notes for any changes to API or behavior
  • [x] All changes are documented in docs/changes.rst
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  • [x] Tested locally using tox / pytest
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  • [x] Automated testing passes (see CI)
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• [x] State of these changes is:
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[coveralls]

Pull Request Test Coverage Report for Build 8238402266

Details

• 56 of 58 (96.55%) changed or added relevant lines in 2 files are covered.
• 2 unchanged lines in 1 file lost coverage.
• Overall coverage increased (+0.03%) to 91.072%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
petl/util/random.py	14	16	87.5%
<!--	Total:	56	58	96.55%	-->

Files with Coverage Reduction	New Missed Lines	%
petl/version.py	2	81.82%
<!--	Total:	2		-->

Totals
Change from base Build 5940841807:	0.03%
Covered Lines:	13352
Relevant Lines:	14661

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💛 - Coveralls