see RARE paper Fig. 6 (a)

Returns all points, confindences and transcriptions of a file in lists. Valid line formats: xmin,ymin,xmax,ymax,[confidence],[transcription]

Returns true for structured data types.

Returns true for structured data types.

Returns true for structured data types.

On PyPy, check that "__bool__" (or "__nonzero__" on Python 2.7) attr exists

On PyPy, check that "__bool__" (or "__nonzero__" on Python 2.7) attr exists

On PyPy, check that "__bool__" (or "__nonzero__" on Python 2.7) attr exists

Import and return a module or throws `error_already_set`.

Import and return a module or throws `error_already_set`.

Import and return a module or throws `error_already_set`.

Default implementation: do nothing