count for in range( )for in range( )if [ ][ ]% == count count this can also be done with list comprehensioncount sum([ for in range( for in range( if [ ][ ]% == ]creating large two-dimensional lists belowto create larger listyou can use list comprehension like [[ ]* for in range( )this creates list of zeroes with rows and columns picking out rows and columns to get the row of (starting at row )use the followingl[rto get the column of (starting at column )use list comprehension[ [ ][cfor in range(len( ))flattening list to flatten two-dimensional listthat isreturn one-dimensional list of its elementsuse the following[ for row in for in rowfor instancesuppose we have the following listl [[ , , ][ , , ][ , , ]the flattened list will be[ higher dimensions creating and using -dimensional and higher lists is similar here we create listl [[[ ]* for in range( )for in range( )it is list whose items are lists of lists the first entry in the list is [ ][ ][