Update pyparsing API: parseString → parse_string #90

Summary

edtf 5.0.0 uses deprecated pyparsing method names, causing DeprecationWarnings with pyparsing 3.2+:

DeprecationWarning: 'parseString' deprecated - use 'parse_string'
  File ".../edtf/parser/grammar.py", line 352

The Issue

pyparsing 3.1+ deprecated camelCase method names in favor of PEP8 snake_case:

• parseString() → parse_string()
• parseAll param → parse_all

These will be removed in pyparsing 4.0.

Suggested Fix

pyparsing 3.2.2 includes a migration tool:

python -m pyparsing.tools.cvt_pep8_names -u edtf/parser/grammar.py

Or manually update line 352 in edtf/parser/grammar.py:

# Before
p = edtfParser.parseString(input_string.strip(), parseAll)

# After  
p = edtfParser.parse_string(input_string.strip(), parse_all=parseAll)

Environment

• Python 3.12
• edtf 5.0.0
• pyparsing 3.2.x