query: appending list but error 'NoneType' object has no attribute 'append'
positive_passages.docid: 3897
positive_passages.text: Why does append() always return None in Python?
negative_passages.docid: 41896
negative_passages.text: List creation/manipulation
negative_passages.docid: 38303
negative_passages.text: Why does this iterative list-growing code give IndexError: list assignment index out of range?
negative_passages.docid: 112695
negative_passages.text: Appending a dictionary to a list in a a loop Python
negative_passages.docid: 45236
negative_passages.text: Append a list as a column in a dataset
negative_passages.docid: 82473
negative_passages.text: I'm getting an IndentationError. How do I fix it?
negative_passages.docid: 76660
negative_passages.text: Python list problem
negative_passages.docid: 147677
negative_passages.text: How does one append material to a token list?
negative_passages.docid: 95634
negative_passages.text: Python The appended element in the list changes as its original variable changes
negative_passages.docid: 17772
negative_passages.text: How to append something to an array?
negative_passages.docid: 25621
negative_passages.text: Append[] is not working for empty list
negative_passages.docid: 21854
negative_passages.text: Append to a list defined in a tuple - is it a bug?
negative_passages.docid: 114824
negative_passages.text: Why doesn't 2.__add__(3) work in Python?
negative_passages.docid: 59951
negative_passages.text: Why does list.append evaluate to false in a boolean context?
negative_passages.docid: 39741
negative_passages.text: How to print a list with integers without the brackets, commas and no quotes?
negative_passages.docid: 80800
negative_passages.text: How to concatenate items in a list to a single string?
negative_passages.docid: 94789
negative_passages.text: Tkinter: AttributeError: NoneType object has no attribute