pyparsing 3.3.2

Pyparsing 3.3.2

on Python PyPI

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.