code: def report(self, texts, n_examples=10, context_size=10, f=sys.stdout):
          
  
          result = list(self.compute_report(texts, context_size).items())
          result.sort(key=lambda x: (len(x[1]), x[0]), reverse=True)
          s = 'Analyzed {0} texts.\n'.format(len(texts))
          if (len(texts)) == 0:
              f.write(s)
              return
          if len(result) > 0:
              s += 'Invalid characters and their counts:\n'
              for c, examples in result:
                  s += '"{0}"\t{1}\n'.format(c, len(examples))
              s += '\n'
              for c, examples in result:
                  s += 'For character "{0}", found {1} occurrences.\nExamples:\n'.format(c, len(examples))
                  examples = sample(examples, min(len(examples), n_examples))
                  for idx, example in enumerate(examples):
                      s += 'example {0}: {1}\n'.format(idx+1, example)
                  s += '\n'
              f.write(s)
          else:
              f.write('All OK\n')
docs: Compute statistics of invalid characters and print them.
  
          Parameters
          ----------
          texts: list of str
              The texts to search for invalid characters.
          n_examples: int
              How many examples to display per invalid character.
          context_size: int
              How many characters to return as the context.
          f: file
              The file to print the report (default is sys.stdout)