input: Write a python function to get the file block table name given a base block table name and an index.
  assert getFileBlockTable('block_table', 1) == 'block_table_1'
  assert getFileBlockTable('block_table', 0) == 'block_table_0'
  assert getFileBlockTable('block_table', 5) == 'block_table_5'
output: def getFileBlockTable(base_name, index):
      return f"{base_name}_{index}"