I am a beginner of Python. I have made a dictionary of Lists. I want to pick a random value and then to know the key of that value. Is that possible? e.g. Is there a way to know which is the key of the random value ? My purpose is to delete that pick_value from the list.Any suggestion is
Tag: list
Apply condition in for loop to each element in a list of lists
I am trying to see if each value in array is less then 0 then output 0, else output the number itself. The output must have the same dimensions as the input. Currently the input is a 3 by 4 but output is a list. How do I get the output size the same (3 by 4 array)? Answer Python’s
In Python, I want to add a number to each element in a list, but I get [[0,1],2] instead of [0,1,2]. How to fix this?
I have For each element in listB, I want to extend it to a length-3 element by adding a number that is in listall but not in this element. My desired output is the following list: As a first step, I tried the following code: However, the output I got is: This is far from what I wanted. As each
How to compare a list of dict with list of tuples in Python
I have a list of dict as below: and list of tuples: I have to write a python code where I have to checkif MetaData from dict (for both keyboard & smallObjects) in objList if greater than or equal to the count in objectsCounter. If yes, then I have to set IsCompleted to True otherwise False. For this I have
how to match two lists that contain some matching strings?
I have two list such as. First list contains some additional string in the elements but I want to find the match with or without converting it to integer from the second list. output req: Tried: Answer If you only want to compare the number part you have to do some conversion. Start with l2 is now [1, 4]. Now
How to handle Pandas columns where elements are Lists?
I have loaded some JSON API data as a Pandas dataframe, as such, there are some columns that come out as lists. I also have some NaN values. First and foremost I want to replace the NaN with a single word such as ’empty’ but the rest of the data are already in list forms. I want to ultimately create
All possible combinations of a list of tuples
I’m creating “Boggle” in python, and I have a list of tuples that represent coordinates on a game board: I’m trying to create a new list of lists of tuples that will represent all possible paths on the board. It’d look something like this: I tried using itertools.combinations and itertools.permutations but it doesn’t seem to do the job, for example
How do I find the index of an unknown value in python?
So basically I have a list like this – and I don’t know what val is. So how do I get the index of val (3) only knowing that it is not None Answer This one line solution gives you the first value that is not None. This returns the actual value, to get the index, look into this answer
Create a Nested list from a pandas data frame
I am trying to create a kind of nested list from a pandas data frame. I have this data frame: So I want to create a kind of nested list using the above data frame using ‘id1’ column, and ‘Name1’ and ‘Name2’ columns. For example, if we think about the first row, id1 should be in one list ([‘ab-85643’]) and
How can I get attributes of induvidual items in a list of Objects in Python?
I have a list of objects known as Civilizations and initialized as I also have a class Civilization and class Mothership as Printing (a) gives us <__main__.Mothership object at 0x0000029412E240A0> twice as a result, and x ends up looking like [300,300]. Is there a way to iterate over the objects and obtain their individual attributes? I am trying to get