Meaning of list[-1] in Python - Stack Overflow I have a piece of code here that is supposed to return the least common element in a list of elements, ordered by commonality: def getSingle(arr): from collections import Counter c = Counte
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
What is the difference between list and list [:] in python? When reading, list is a reference to the original list, and list[:] shallow-copies the list When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously in the list Also, don't use list as a name since it shadows the built-in
How to check permissions of a specific directory? - Stack Overflow $ ls -ld directory ls is the list command - indicates the beginning of the command options l asks for a long list which includes the permissions d indicates that the list should concern the named directory itself; not its contents If no directory name is given, the list output will pertain to the current directory
How do I retrieve the available commands from a module? To know which PowerShell modules are available on a machine I use the command Get-Module -ListAvailable This returns a list with module-type, -name and the exported commands But the exported comm