Indexing a SearchVector vs Having a SearchVectorField in Django. When should I use which? Question: Clearly I have some misunderstandings about the topic. I would appreciate if you correct my mistakes. So as explained in PostgreSQL documentation, We need to do Full-Text Searching instead of using simple textual search operators. Suppose I have a blog …
Why do i get a list index out of range error with entries with a length of four digits? Question: I wrote this algorithm that returns the shortest sequence using operations to sort a list of numbers. is sorted by always reversing the order of the first n elements of the list and removing the …
Knowing a column of indexes how to get column of their values in Dataframe? Question: I have a DataFramedf = pd.DataFrame(np.random.randint(-100, 100, 100).reshape(10, -1), columns=list(range(10)), index=list(‘abcdefghij’)) and I found some indexes using method .idxmin(axis=1) and getting Seriesdf_ind = a 5 b 8 c 2 d 0 e 7 f 0 g 4 h 6 i …
Indexing of strings (molecule SMILES) Question: Also, please can someone adjust or give me advice on how to look at the second order of parenthesis. Same process as this, but with only parenthesis in second order (this code is first order). Can you make it so I can easily adjust? By second order I mean …
adding total to bottom of multiindex groups Question: I am trying to add a sum to my multiindex dataframe by each grouping Count state car status texas civic New 11 undamaged 11 damaged 10 totalled 5 virginia civic New 10 undamaged 20 damaged 10 totalled 5 I want it to look like: Count state car …
Efficient way to develop a dictionary for reverse lookup? Question: Let’s say I have a dictionary with the following contents: old_dict = {‘a’:[0,1,2], ‘b’:[1,2,3]} and I want to obtain a new dictionary where the keys are the values in the old dictionary, and the new values are the keys from the old dictionary, i.e.: new_dict …
How to create a dictionary from a dictionary based on indexes Question: I will try to easily explain my problem. I have a dictionary that looks like this: dic = { ‘I2a1a’: [‘I2a1a2’, ‘I2a1a2a’, ‘I2a1a2a1a2’], ‘I2a1b’: [‘I2a1b1a1a1b1a’], ‘I2a1b2’: [‘I2a1b2a’] } Based on this dictionary, when the length of the value is > 1 I want …
Python pop function starts over indexing Question: I’m trying to remove all instances from a list, for example 9. I have an ordered list: num = [1, 2, 3, 4, 5, 6, 7, 8, 9, 9, 9, 9, 9, 10, 11, 12, 13] arg = 9 I use bisect_left(num, 9), this returns 8 (the first …
Repeat index by giving list Question: Not sure if this kind of question is exist or not. If so, I will delete the post later. I tried to build a list with repeating index which will follow the list here: Mylist = [3, 3, 6, 6, 6, 8, 8] My output should be: expect = …
Delete every other element from a list Question: I need to take an array and remove every second element from the array. Always keep the first element and start removing with the next element. Example: ["Keep", "Remove", "Keep", "Remove", "Keep", …] –> ["Keep", "Keep", "Keep"] None of the arrays will be empty. I figured that …
