Lists of summaries from rentrez stop working after being merged using append()
问题 tl;dr: What is different about an esummary list produced by rentrez , and why do said lists stop working with other rentrez functions after they are merged using append() ? I am accessing Pubmed using rentrez . I am able to search for publications and download esummaries without problem. However, there must be something special about an esummary list that I do not understand, because things fall apart when I used append() to try to merge lists. I have not been able to figure out what that