NameError: name 'saveToFile' is not defined

Hi.
Completely nob. I am having this error:

NameError: name 'DicomInfoExtractor' is not defined
>>> import DicomInfoExtractor
C:\Users\Research\Desktop\testhcc\THC00006\14573
>>> print(extractStudyDetails(retrieveDicomFiles()))
Traceback (most recent call last):
File "", line 1, in
NameError: name 'extractStudyDetails' is not defined
>>> print(extractAddtionalHeaderInfo())
Traceback (most recent call last):
File "", line 1, in
NameError: name 'extractAddtionalHeaderInfo' is not defined
>>> saveToFile(extractSeriesDetails(retrieveDicomFiles()),'filename')
Traceback (most recent call last):
File "", line 1, in
NameError: name 'saveToFile' is not defined

Regards !

No file, test, or entry point is named. Start by inspecting how the Python module is imported and where DicomInfoExtractor, extractStudyDetails, extractAddtionalHeaderInfo, retrieveDicomFiles, extractSeriesDetails, and saveToFile are defined; done means the documented usage no longer produces these NameError messages.

Written by the indexing model from the issue text.