old_contents: import re
  
  from coalib.bears.LocalBear import LocalBear
  from coalib.results.Result import Result
  from coalib.results.RESULT_SEVERITY import RESULT_SEVERITY
  
  
  class LineCountBear(LocalBear):
      LANGUAGES = {'All'}
      AUTHORS = {'The coala developers'}
      AUTHORS_EMAILS = {'coala-devel@googlegroups.com'}
      LICENSE = 'AGPL-3.0'
      CAN_DETECT = {'Formatting'}
  
      def _get_blank_line_count(self, file):
          num_blank_lines = len(
              list(filter(lambda x: re.match(r'^\s*$', x), file)))
          return num_blank_lines
  
      def run(self, filename, file, max_lines_per_file: int,
              exclude_blank_lines: bool = False,
              ):
          """
          Count the number of lines in a file and ensure that they are
          smaller than a given size.
  
          :param max_lines_per_file: Number of lines allowed per file.
          :param exclude_blank_lines: "True" if blank lines are to be excluded.
          """
          file_length = len(file)
          if exclude_blank_lines:
              num_blank_lines = self._get_blank_line_count(file)
              file_length = file_length - num_blank_lines
  
          if file_length > max_lines_per_file:
              yield Result.from_values(
                  origin=self,
                  message=('This file had {count} lines, which is {extra} '
                           'lines more than the maximum limit specified.'
                           .format(count=file_length,
                                   extra=file_length-max_lines_per_file)),
                  severity=RESULT_SEVERITY.NORMAL,
                  file=filename)
  
new_contents: import re
  
  from coalib.bears.LocalBear import LocalBear
  from coalib.results.Result import Result
  from coalib.results.RESULT_SEVERITY import RESULT_SEVERITY
  
  
  class LineCountBear(LocalBear):
      LANGUAGES = {'All'}
      AUTHORS = {'The coala developers'}
      AUTHORS_EMAILS = {'coala-devel@googlegroups.com'}
      LICENSE = 'AGPL-3.0'
      CAN_DETECT = {'Formatting'}
  
      def _get_blank_line_count(self, file):
          num_blank_lines = len(
              list(filter(lambda x: re.match(r'^\s*$', x), file)))
          return num_blank_lines
  
      def run(self, filename, file, max_lines_per_file: int,
              exclude_blank_lines: bool = False,
              ):
          """
          Count the number of lines in a file and ensure that they are
          smaller than a given size.
  
          :param max_lines_per_file: Maximum number of lines allowed per file.
          :param exclude_blank_lines: "True" if blank lines are to be excluded.
          """
          file_length = len(file)
          if exclude_blank_lines:
              num_blank_lines = self._get_blank_line_count(file)
              file_length = file_length - num_blank_lines
  
          if file_length > max_lines_per_file:
              yield Result.from_values(
                  origin=self,
                  message=('This file had {count} lines, which is {extra} '
                           'lines more than the maximum limit specified.'
                           .format(count=file_length,
                                   extra=file_length-max_lines_per_file)),
                  severity=RESULT_SEVERITY.NORMAL,
                  file=filename)
  
subject: Fix docstring