I am using the following function pairwise to get the iteration of ordered pairs. For example, if the iterable is a list [1, 2, 3, 4, 5, 6] then I want to get (1, 2), (2, 3), (3, 4), (4, 5), (5, 6), (6, 1). If I use the following function then it returns (1, 2), (2, 3), (3, 4),
Tag: iterator
Speed comparision for iterating over List and Generator in Python
When comparing usage of Python Generators vs List for better performance/ optimisation, i read that Generators are faster to create than list but iterating over list is faster than generator. But I coded an example to test it with small and big sample of data and it contradicts with one another. When I test s…
How can I find all common sub strings using Rust , Python, javascript?
Problem Background Git is an awesome version control system, I want learn git by writing my own version control system. The first step I have to do is implement a string diff tool. I’ve read this blog and this paper. In order to get the diff of two strings, I need to locate the common part. Hence, I cam…
Iterables / generators with specified length
Iterable objects are those that implement __iter__ function, which returns an iterator object, i.e. and object providing the functions __iter__ and __next__ and behaving correctly. Usually the size of the iterable object is not known beforehand, and iterable object is not expected to know how long the iterati…
How to iterate over azure.core.paging.ItemPaged?
I have an iterator object <iterator object azure.core.paging.ItemPaged at 0x7fdb309c02b0>. When I iterate over it for a first time (see code below), it prints the results. However, when I execute this code a second time, it prints nothing. What is wrong in my code? Do I need to somehow reset the enumera…
How to skim itertools permutations?
Initial code: Result: Now I want to remove everything starting with “)” or “#” and ends whit “(” or “#” and contenin “(“,”#”,”)” With Now the list is half in size “9k chart from 20k”. ps: Now, how do i remove (R…
The iteration loop is not working properly for API
There is an API that only produces one hundred results per page. I am trying to make a while loop so that it goes through all pages and takes results from all pages, but it does not work properly. This script goes through the pages: At startup: He sees five pages. When I look at the variable after execution: …
itertools’ islice(count()) vs range()
Real quick one: I just saw a tutorial where they show we can use itertools’ islice() and count() together like so: Is there any advantage in doing this instead of using range() ? Answer Is there any advantage in doing this instead of using range() ? In this example there is no advantage and range would …
Generator function for file reading returning object type as regular function
I am trying to create a generator function to return the content of a .csv file row by row and while the generator function does seem to be iterable with me being able to loop over it with a for loop, when I print the object type of the generator function, instead of returning class ‘generator’, i…
Iterable over raw text documents expected, string object received
I am currently trying to build a naive Bayes classifier as mentioned in this link. Referring to the line under the Training the Classifier subheading, I had a similar line, X_new_counts = count_vect.transform(input.plot_movie) in my code which should take an iterable as an input to the transform function. The…