I want to use a list comprehension to initialize a list of tuples that has a 2 elements in it, my attempt is as follows: But that gives me an error: What is the right way to do it ? I know I can use a for loop, but I want to know anyway. Answer range return a single value
Tag: tuples
How to transform the first element for all tuples move one place afterwards in Python?
For example, if I had a list of tuples like: [(‘first’, 0),(‘second’, 1),(‘third’, 2)] I want to transform it to: [(‘default’, 0),(‘first’, 1),(‘second’, 2)] the second column stays the same but the first column which is the first element move one place afterward for all tuples and the first place will be replaced ‘default’. Is there any quick method to
Convert List of list into tuple of tuples
I have a list of 2×1 matrices like: I need to convert it into a tuple of tuples, like: I know I can loop through the list and convert it manually , trying to check if there is a better-optimized way of doing it. Answer You can do it this way using numpy indexing and slicing that outer dimension. Output:
How to convert a array of array to array of tuples
I everyone, I struggle to convert an array of array like this : to an array of tuples (array, str) like this: I did find a way to append the type to the array but it’s not exactly what I want: Do you have something better ? Thanks :) Answer Solution Shortest solution: list(zip(vals, types)) 🔥🔥🔥 Output:
Delete empty lists from tuple from inside a list
I have a list of tuples which in turn have 2 elements and a list. I wish to delete the tuples that have empty lists. Expected output: I tried : It throws me a Memory Error Answer One way using list comprehension with unpacking: Output:
Binding a dataframe to a variable in a for-loop converts it into a tuple?
Sorry if this is basic but I am new to python. I was experimenting with creating plots in pandas through a for loop when I got AttributeError: ‘tuple’ object has no attribute ‘plot’. Looking at my code, I found out that assigning a dataframe to a variable converts it into a tuple. See below: Output: This doesn’t happen if I
Pickle data not loading
Here I the data I try to save as a “pickle file” Then in a separate script i open it: It seems to run smoothly, however the only thing that appears in my variable explorer is a Buffered Reader Object. Answer pkl.load returns the loaded object. Your code immediately discards it. You should assign in to a variable:
Filter List of Tuples to Exclude from Another List of Tuples which Contains
(Using Python3) I have a list of tuples, (of strings) I also have a list of tuples (also strings) which I want to “exclude” I’m trying to find an efficient way to remove any element in have that contains both the elements in each exclude tuple. Ordering does not matter. My goal is to return something like this: Answer You
Unique lists within list of lists if those lists have list as one of the elements
If I have: What would be the best way to get: If I try: I get TypeError: unhashable type: ‘list’. I don’t want to remove all layers of nesting, because that would just combine everything into one list: Output: If two instructors have the same count (i.e. 3 in this case), then only one 3 remains because it’s a set,
assign key as list index+1 to list of tuples [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 2 years ago. Improve this question I have a list of tuples and I want to convert them to dictionary but the key should be tuples index in the list+1 So