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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 loop (possibly using the else clause as well, which is not really well-known) You can also use
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 comprehension instead of a nested list? The most popular solutions here generally only flatten one "level" of the nested list See Flatten an irregular (arbitrarily nested) list of lists for solutions that
python - Removing duplicates in lists - Stack Overflow In fact, despite the title "Python removing duplicates in lists", it doesn't seem like OP wanted to remove duplicates from within the same list at all Rather, it looks like OP wanted to take two lists e g [1, 2, 3, 4] and [1, 3, 4], and remove from the first those which are present in the second, to get [2]
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
join list of lists in python - Stack Overflow 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
python - Whats the difference between [] and {} vs list () and dict . . . 2 list () form of declaration is easier to read for people with visual impairments 3 If there is no explicit instruction in PEP 8, the code should be written in a way that is easily readable and understandable for other developers For example, from a distance, I have difficulty discerning which data structure is being declared: [], {}, or ()