BigReport class is a
container for all the information we need to produce the
report. Its constructor takes the name of a directory,
walks that directory subtree, and records all the file
method is used to extract the resulting report in the
desired order. Here is its interface:
# - - - - - c l a s s B i g R e p o r t - - - - - class BigReport: """Holds the big-files report. Exports: BigReport ( dir ): [ dir is a string -> if dir names a directory to which we have access -> return a BigReport object describing all the accessible files in that directory's subtree else -> raise OSError ] .genFiles(): [ generate a sequence of BigInfo objects representing the files in self, in descending order by file size, with the path name as a secondary key ] Class invariants: .__bigList: [ a list of information on all the files in self as BigInfo objects, sorted ] """