List of industries in pakistan pdf. The most popular solutions here generally only flatten one "level" of the nested list. The first, [:], is creating a slice (normally often used for getting just part of a list), which happens to contain the entire list, and thus is effectively a copy of the list. You can get the unique values by converting the list to a set. The second, list(), is using the actual list type constructor to create a new list which has contents equal to the first list. Also, don't use list as a name since it shadows the built-in. . 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?. Jul 9, 2010 · How can I list all files of a directory in Python and add them to a list? Nov 1, 2011 · How can I check if a list has any duplicates and return a new list without duplicates? 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 Nov 11, 2009 · You are obviously asking for the number of elements in the list. The first, [:], is creating a slice (normally often used for getting just part of a list), which happens to contain the entire list, and thus is effectively a copy of the list. For the opposite process - creating a list from a string - see How do I split a string into a list of characters? or How do I split a string into a list of words? as appropriate. When assigning, list (re)binds the name and list[:] slice-assigns, replacing what was previously in the list. Sep 17, 2012 · For handling a few strings in separate variables, see How do I append one string to another in Python?. If a searcher comes here looking for the size of the object in memory, this is the actual question & answers they are looking for: How do I determine the size of an object in Python? Oct 15, 2012 · 1541 First declare your list properly, separated by commas. 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. See Flatten an irregular (arbitrarily nested) list of lists for solutions that Nov 2, 2010 · When reading, list is a reference to the original list, and list[:] shallow-copies the list. hxcut rbkp whugfahl geggcs sgu vjns uhzrh tmvyroj xuouobf nvcs