old_contents: # Berkeley DB
  # Chris Li
  
  # Creating and populating a database for btree.
  import bsddb3 as bsddb
  import random
  import time
  import subprocess
  
  DA_FILE = "/tmp/my_db/sample_db"
  DB_SIZE = 100000
  DB_SEED = 10000000
  
  def getRandom():
      return random.randint(0,63)
  
  def getRandomChar():
      return chr(97+random.randint(0,25))
  
  def btreeCreatePop():
      subprocess.call(['rm', '-r', '-f', DA_FILE, '/tmp/my_db'])
      subprocess.call(['mkdir', '/tmp/my_db'])
  
      # open database if it exist, else create a new one.
      try:
          db = bsddb.btopen(DA_FILE, "w")
      except:
          print("DB doesn't exist, creating a new one.\n")
          db = bsddb.btopen(DA_FILE, "c")
          random.seed(DB_SEED)
  
      # generate key-value pairs.
      for index in range(DB_SIZE):
          keyRange = 64 + getRandom()
          key = ""
          for i in range(keyRange):
              key = key +str(getRandomChar())
  
          valueRange = 64 + getRandom()
          value = ""
          for i in range(valueRange):
              value = value + str(getRandomChar())
  
          # view key-value pairs.
          print("key:", key)
          print("value:", value)
          print("")
  
          # encoding the keys and values.
          key = key.encode(encoding = 'UTF-8')
          value = value.encode(encoding = 'UTF-8')
  
          # inserting the key-value pairs into the database.
          db[key] = value
  
      print("Database has been created.\n")
  
      # close the database.
      try:
          db.close()
      except Exception as e:
          print(e)
      return
new_contents: # Berkeley DB
  # Chris Li
  
  # Creating and populating a database for btree.
  import bsddb3 as bsddb
  import random
  import time
  import subprocess
  
  DA_FILE = "/tmp/my_db/sample_db"
  DB_SIZE = 100000
  DB_SEED = 10000000
  
  def getRandom():
      return random.randint(0,63)
  
  def getRandomChar():
      return chr(97+random.randint(0,25))
  
  def btreeCreatePop():
      subprocess.call(['rm', '-r', '-f', DA_FILE, '/tmp/my_db'])
      subprocess.call(['mkdir', '/tmp/my_db'])
  
      # open database if it exist, else create a new one.
      try:
          db = bsddb.btopen(DA_FILE, "w")
      except:
          print("DB doesn't exist, creating a new one.\n")
          db = bsddb.btopen(DA_FILE, "c")
          random.seed(DB_SEED)
  
      # generate key-value pairs.
      for index in range(DB_SIZE):
          keyRange = 64 + getRandom()
          key = ""
          for i in range(keyRange):
              key = key +str(getRandomChar())
  
          valueRange = 64 + getRandom()
          value = ""
          for i in range(valueRange):
              value = value + str(getRandomChar())
  
          # view key-value pairs.
          print("key:", key)
          print("value:", value)
          print("")
  
          # encoding the keys and values.
          key = key.encode(encoding = 'UTF-8')
          value = value.encode(encoding = 'UTF-8')
  
          # inserting the key-value pairs into the database.
          db[key] = value
  
      print("Database has been created.\n")
  
      # close the database.
      try:
          db.close()
      except Exception as e:
          print(e)
      return
      
subject: create and populate a database for btree