v3.3.2

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• Defined pyparsing-specific warning classes so that they can be selectively enabled
  or disabled without affecting warnings raised by other libraries in the same Python
  app:

  • PyparsingWarning - base warning for all pyparsing-specific warnings (inherits
    from UserWarning)
  • PyparsingDeprecationWarning - warning for using deprecated features (inherits
    from PyparsingWarning and DeprecationWarning)
  • PyparsingDiagnosticWarning - warning raised when pyparsing diagnostics are
    enabled and a diagnostic feature is used (inherits from PyparsingWarning)

• Added as_datetime parse action to pyparsing.common - a more generalized
  version of the convert_to_datetime parse action (supports any expression that extracts
  date/time fields into "year", "month", "day", etc. results names), and validates
  that the parsed fields represent a valid date and time.

• Added iso8601_date_validated and iso8601_datetime_validated expressions to
  pyparsing.common, which return a Python datetime.datetime

• Various performance improvements in ParseResults class and core functions, with
  10-20% performance overall.

• Added regex_inverter web page (using PyScript) to demonstrate using the inv_regex.py
  example.

• Expanded regex forms handled by the examples/inv_regex.py example:

  • named capturing groups (?P<name>)
  • partial repetition ({m,} and {,n})
  • negated character classes ([^...])

• Added SPy (Simplified Python) parser to examples.

v3.3.1

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• Added license info to metadata, following PEP-639. Thanks to Gedalia Pasternak and
  Marc Mueller for submitted issue and PR. Fixes #​626.

v3.3.0

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===========================================================================================
The version 3.3.0 release will begin emitting DeprecationWarnings for pyparsing methods
that have been renamed to PEP8-compliant names (introduced in pyparsing 3.0.0, in August,
2021, with legacy names retained as aliases). In preparation, I added in pyparsing
3.2.2 a utility for finding and replacing the legacy method names with the new names.
This utility is located at pyparsing/tools/cvt_pep8_names.py. This script will scan all
Python files specified on the command line, and if the -u option is selected, will
replace all occurrences of the old method names with the new PEP8-compliant names,
updating the files in place.

Here is an example that converts all the files in the pyparsing /examples directory:

  python -m pyparsing.tools.cvt_pyparsing_pep8_names -u examples/*.py