old_contents: import re, click
  from shub.utils import get_key_netrc, NETRC_FILE
  
  @click.command(help='remove Scrapinghug API key from the netrc file')
  @click.pass_context
  def cli(context):
      if not get_key_netrc():
          context.fail('Key not found in netrc file')
      with open(NETRC_FILE, 'r+') as out:
          key_re = r'machine\s+scrapinghub\.com\s+login\s+\w+\s+password\s+""\s*'
          content = out.read()
          content_new = re.sub(key_re, '', content)
          if content_new != content:
              out.seek(0)
              out.truncate()
              out.write(content_new)
      if get_key_netrc():
          context.fail(
              'Error removing key from the netrc file.'
              'Please, open the file ~/.netrc and remove it manually')
  
new_contents: import re, click
  from shub.utils import get_key_netrc, NETRC_FILE
  
  @click.command(help='remove Scrapinghug API key from the netrc file')
  @click.pass_context
  def cli(context):
      if not get_key_netrc():
          context.fail('Key not found in netrc file')
      error, msg = remove_sh_key()
      if error:
          context.fail(msg)
      if get_key_netrc():
          context.fail(
              'Error removing key from the netrc file.'
              'Please, open the file ~/.netrc and remove it manually')
  
  def remove_sh_key():
      key_re = r'machine\s+scrapinghub\.com\s+login\s+\w+\s+password\s+""\s*'
      error_msg = ''
      try:
          with open(NETRC_FILE, 'r+') as out:
              content = out.read()
              content_new = re.sub(key_re, '', content)
              if content_new == content:
                  error_msg = 'Regex didn\'t match. \
                               Key wasn\'t removed from netrc file'
              else:
                  out.seek(0)
                  out.truncate()
                  out.write(content_new)
      except Exception as err:
          error_msg = str(err)
      if error_msg:
          return True, error_msg
      else:
          return False, ''
  
subject: Add verification for removing key from netrc file