The Question : 312 people think this question is useful I have checked all of the other questions with the same error yet found no helpful solution =/ I have a dictionary of lists: in which some of the values are empty. At the end of creating these lists, I want to remove these empty
The Question : 311 people think this question is useful What is the Pythonic approach to achieve the following? Each member of list_c is a tuple, whose first member is from list_a and the second is from list_b. The Question Comments : The Answer 1 475 people think this answer is useful In Python 2:
The Question : 309 people think this question is useful When should I use a dictionary, list or set? Are there scenarios that are more suited for each data type? The Question Comments : The Answer 1 613 people think this answer is useful A list keeps order, dict and set don’t: when you care
The Question : 305 people think this question is useful In Python, I can do: Is there any easy way to do the same when I have a list of objects? Or do I have to resort to a for loop? The Question Comments : The Answer 1 446 people think this answer is useful
The Question : 322 people think this question is useful I need the last 9 numbers of a list and I’m sure there is a way to do it with slicing, but I can’t seem to get it. I can get the first 9 like this: The Question Comments : Related: How to extract the
The Question : 320 people think this question is useful I need to join a list of items. Many of the items in the list are integer values returned from a function; i.e., How should I convert the returned result to a string in order to join it with the list? Do I need to
The Question : 336 people think this question is useful I have a list of tuples in Python, and I have a conditional where I want to take the branch ONLY if the tuple is not in the list (if it is in the list, then I don’t want to take the if branch) This
The Question : 334 people think this question is useful What would be the most elegant and efficient way of finding/returning the first list item that matches a certain criterion? For example, if I have a list of objects and I would like to get the first object of those with attribute obj.val==5. I could
The Question : 342 people think this question is useful With linq I would How to do this with Python? The Question Comments : It is confusing that this question was asked for both lists and generators, these should have been separate questions The Answer 1 557 people think this answer is useful Slicing a
The Question : 337 people think this question is useful I have an excel document which looks like this.. I want to be able to return the contents of column 1 – cluster as a list, so I can run a for loop over it, and create an excel worksheet for every cluster. Is it
The Question : 338 people think this question is useful I have a pandas data frame df like: I want to group by the first column and get second column as lists in rows: Is it possible to do something like this using pandas groupby? The Question Comments : The Answer 1 484 people think
The Question : 361 people think this question is useful It seems so “dirty” emptying a list in this way: Does a clear way exist to do that? The Question Comments : So why do python dicts and sets have a clear() method, but not lists? But if there are multiple references to the object,
