I wanted to generate a list in list : now, I have basically two options, either I input the list through a text file or I should generate the list by itself. is it possible to generate this type of list by itself using nested loops? I wanted to put -1 at the place of the middle zero of each
Tag: list
Create list of empty lists having name
I am pretty new to python and looking for how to create a list of empty lists having names more efficiently than presented below I would like to have some names to the lists. Answer Beacuse you want it to have name, how about using dict?
how to analysis String contain multiple list in python
I have a string as follows I use json.load with ast.literal_eval neither works Is there any function that can quickly and perfectly parse this string? hope through like output: C Answer The string does not represent a valid Python construct. Therefore, neither eval nor ast.literal_eval will be able to parse i…
Finding any changes between two lists of the same length
Given 2 lists of the same length. Is it possible to return a dict containing any changes between the 2 lists. Each key being the value that was changed and the key’s value being the value it was changed to. The following returns difference between the 2 lists: I am looking to go one step further and sav…
How to create a dictionnary whose key:value pairs are the values of two different lists of dictionnaries?
I have 2 lists of dictionnaries that result from a pymongo extraction. A list of dicts containing id’s (string) and lemmas (strings): lemmas = [{‘id’: ‘id1’, ‘lemma’: ‘lemma1’}, {‘id’: ‘id2’, ‘lemma’: ‘lemma2’…
adding consequently items of a list to a dataframe
As a practice, I have created the following dataset of reading books: Then I added a fourth column as follows And now I would like to add as follows (I mean as rows 5 and 6) the following item, always by using the list I have tried adding other titles the following code which does not work: Since I am
Pandas get elements from a column containing list of values using index slicing
Posting minimal reproducible example I have a dataframe say I need to create a new column where values will be only from the alternate index. This is what I tried, but this does not work P.S : There are numerous ways in which this can be achieved I am looking for a more pandaic approach Answer You may need to
Compare current element in one list to next element in another list
I have two equally long lists representing the start and end frames of an event. They look something like this: The next element of the START list is always going to be bigger than the previous element in the END lists a.k.a 118 is always going to be bigger than 113. I am trying to calculate the difference be…
How to test for substrings in the list
I need to check if a string is in the list my_list. When I run ‘word2’ in my_list, it returns False instead of True. How can I test for substrings in the list? Answer You have to check whether your string is part of each list element. Something like this:
Can we get duplicated values and get the mean of the value from lists
Hello this is using python panda From the above code what I get is From this list I want to actually get the mean of the values inside the class list. For example for ABC I want to get (123+345+678)/3 and for JIK (456+789)/2. I tried getting the mean of the values but I found out inside lists we cannot