How do I concatenate two lists in Python? - Stack Overflow
404 How do I concatenate two lists in Python? As of 3.9, these are the most popular stdlib methods for concatenating two (or more) lists in Python. ... * A solution will qualify as a generalized solution if it …
python - Find a value in a list - Stack Overflow
In Python 3, filter doesn't return a list, but a generator-like object. Finding the first occurrence If you only want the first thing that matches a condition (but you don't know what it is yet), it's fine to use a for …
join list of lists in python - Stack Overflow
Apr 4, 2009 · Closed 9 years ago. Is the a short syntax for joining a list of lists into a single list ( or iterator) in python? For example I have a list as follows and I want to iterate over a,b and c.
slice - How slicing in Python works - Stack Overflow
Python slicing is a computationally fast way to methodically access parts of your data. In my opinion, to be even an intermediate Python programmer, it's one aspect of the language that it is necessary to …
python - Regular Expressions: Search in list - Stack Overflow
Dec 20, 2024 · I want to filter strings in a list based on a regular expression. Is there something better than [x for x in list if r.match(x)] ?
python - How do I make a flat list out of a list of lists? - Stack Overflow
If your list of lists comes from a nested list comprehension, the problem can be solved more simply/directly by fixing the comprehension; please see How can I get a flat result from a list …
How do I get the number of elements in a list (length of a list) in Python?
Nov 11, 2009 · Explanation Everything in Python is an object, including lists. All objects have a header of some sort in the C implementation. Lists and other similar builtin objects with a "size" in Python, in …
How to list all installed packages and their versions in Python?
Is there a way in Python to list all installed packages and their versions? I know I can go inside python/Lib/site-packages and see what files and directories exist, but I find this very awkward. ...
python - How do I split a string into a list of words? - Stack Overflow
To split on other delimiters, see Split a string by a delimiter in python. To split into individual characters, see How do I split a string into a list of characters?.
python - Getting indices of True values in a boolean list - Stack Overflow
The range here enumerates elements of your list and since we want only those where self.states is True, we are applying a filter based on this condition. For Python > 3.0: