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NameError in PubMedArticleGrabber.py

Description:
I encountered a NameError while trying to use the pubmed-articles-grabber program. When attempting to execute the grab() method, the script raises a NameError with the message "name 'cr' is not defined".

In [1]: from pubMedArticleGrabber import PubMedArticleGrabber

In [2]: wanted = PubMedArticleGrabber('wanted', '[email protected]')

In [3]: wanted.grab()
4
fetching..
woke up
---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
Cell In[3], line 1
----> 1 wanted.grab()

File ~/PubMed_Tools/pubmed-articles-grabber/pubMedArticleGrabber.py:59, in PubMedArticleGrabber.grab(self)
     57 """The main function to grab articles via both PubMedCentral and Crossref"""
     58 self.grabViaPMCOAI()
---> 59 self.grabViaCrossref()

File ~/PubMed_Tools/pubmed-articles-grabber/pubMedArticleGrabber.py:107, in PubMedArticleGrabber.grabViaCrossref(self)
    105 for doi in dois:
    106     try:
--> 107         articles.append(cr.works(ids=doi))
    108     except (HTTPError, requests.exceptions.HTTPError, URLError, CertificateError, requests.exceptions.SSLError, TimeoutError) as e:
    109         if 'Not Found' in str(e):

NameError: name 'cr' is not defined

I believe the issue can be resolved by properly defining or importing the cr variable before using it in the PubMedArticleGrabber.py script.

Any assistance in resolving this issue would be greatly appreciated. Thank you!

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