Reduce Keys

Example

>>> # TEST PREPARATION
>>> import sys
>>> from io import StringIO
>>> from techminer2.thesaurus.user import CreateThesaurus, ReduceKeys

>>> # Redirecting stderr to avoid messages during doctests
>>> original_stderr = sys.stderr
>>> sys.stderr = StringIO()

>>> # Reset the thesaurus to initial state
>>> CreateThesaurus(thesaurus_file="demo.the.txt", field="raw_descriptors",
...     root_directory="example/", quiet=True).run()

>>> # Creates, configures, an run the reducer
>>> reducer = (
...     ReduceKeys()
...     .with_thesaurus_file("demo.the.txt")
...     .where_root_directory_is("example/")
... )
>>> reducer.run()

>>> # Capture and print stderr output to test the code using doctest
>>> output = sys.stderr.getvalue()
>>> sys.stderr = original_stderr
>>> print(output)
Reducing thesaurus keys
  File : example/thesaurus/demo.the.txt
  Keys reduced from 1796 to 1796
  Keys reduction completed successfully