old_contents: #!/usr/bin/env python3
  
  # tsuserver3, an Attorney Online server
  #
  # Copyright (C) 2016 argoneus <argoneuscze@gmail.com>
  #
  # This program is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # This program is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  
  
  # Install dependencies in case one is missing
  
  import sys
  import subprocess
  
  
  def check_deps():
      py_version = sys.version_info
      if py_version.major < 3 or (py_version.major == 3 and py_version.minor < 7):
          print("tsuserver3 requires at least Python 3.7! Your version: {}.{}"
                  .format(py_version.major, py_version.minor))
          sys.exit(1)
  
      try:
          import arrow
      except ModuleNotFoundError:
          print('Installing dependencies for you...')
          try:
              subprocess.check_call([
                  sys.executable, '-m', 'pip', 'install', '--user', '-r',
                  'requirements.txt'
                  ])
              print('If an import error occurs after the installation, try '
                      'restarting the server.')
          except subprocess.CalledProcessError:
              print('Couldn\'t install it for you, because you don\'t have pip, '
                  'or another error occurred.')
  
  
  def main():
      from server.tsuserver import TsuServer3
      server = TsuServer3()
      server.start()
  
  
  if __name__ == '__main__':
      print('tsuserver3 - an Attorney Online server')
      check_deps()
      main()
  
new_contents: #!/usr/bin/env python3
  
  # tsuserver3, an Attorney Online server
  #
  # Copyright (C) 2016 argoneus <argoneuscze@gmail.com>
  #
  # This program is free software: you can redistribute it and/or modify
  # it under the terms of the GNU General Public License as published by
  # the Free Software Foundation, either version 3 of the License, or
  # (at your option) any later version.
  #
  # This program is distributed in the hope that it will be useful,
  # but WITHOUT ANY WARRANTY; without even the implied warranty of
  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  # GNU General Public License for more details.
  #
  # You should have received a copy of the GNU General Public License
  # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  
  
  # Install dependencies in case one is missing
  
  import sys
  import subprocess
  
  
  def check_deps():
      py_version = sys.version_info
      if py_version.major < 3 or (py_version.major == 3 and py_version.minor < 7):
          print("tsuserver3 requires at least Python 3.7! Your version: {}.{}"
                  .format(py_version.major, py_version.minor))
          sys.exit(1)
  
      try:
          import geoip2
      except ModuleNotFoundError:
          print('Installing dependencies for you...')
          try:
              subprocess.check_call([
                  sys.executable, '-m', 'pip', 'install', '--user', '-r',
                  'requirements.txt'
                  ])
              print('If an import error occurs after the installation, try '
                      'restarting the server.')
          except subprocess.CalledProcessError:
              print('Couldn\'t install it for you, because you don\'t have pip, '
                  'or another error occurred.')
  
  
  def main():
      from server.tsuserver import TsuServer3
      server = TsuServer3()
      server.start()
  
  
  if __name__ == '__main__':
      print('tsuserver3 - an Attorney Online server')
      check_deps()
      main()
  
subject: use most recent dependy for people updating