整数不转换为字符串不转换为字符串（Python）

Question

It seems that my code isn't converting integers in a list to strings. Here is the are of my code with the problem:

def aidrawboard(aiboard):
    for i in aiboard:
        inttostr = aiboard[i]
        str(inttostr)
        aiboard[i] = inttostr
        for i in aiboard:
            if aiboard[i] == '3':
                aiboard[i] = '0'
            break
    print(aiboard)
    print("THIS IS THE AI BOARD")
    print('   |   |')
    print(' ' + aiboard[7] + ' | ' + aiboard[8] + ' | ' + aiboard[9])
    print('   |   |')
    print('-----------')
    print('   |   |')
    print(' ' + aiboard[4] + ' | ' + aiboard[5] + ' | ' + aiboard[6])
    print('   |   |')
    print('-----------')
    print('   |   |')
    print(' ' + aiboard[1] + ' | ' + aiboard[2] + ' | ' + aiboard[3])
    print('   |   |')

The code is for a battleship game. an example of list aiboard is [0, 0, 2, 0, 0, 0, 0, 0, 0, 0]

I get the error "TypeError: Can't convert 'int' object to str implicitly", with the error pointing to

print(' ' + aiboard[7] + ' | ' + aiboard[8] + ' | ' + aiboard[9])

Sorry if the error is very newbish. This is my first year coding.

Answer 1

由于在abiword列表中存储的项目是整数，因此在打印时需要将element（ 要打印 ）的数据类型转换为字符串。

print(' ' + str(aiboard[7]) + ' | ' + str(aiboard[8]) + ' | ' + str(aiboard[9]))

Answer 2

Or may you can define a function to print_out the board:

def print_board(aiboard):
  str_state = map(str, aiboard)
  print('   |   |')
  print(' ' + str_state[7] + ' | ' + str_state[8] + ' | ' + str_state[9])
  print('   |   |')
  print('-----------')
  print('   |   |')
  print(' ' + str_state[4] + ' | ' + str_state[5] + ' | ' + str_state[6])
  print('   |   |')
  print('-----------')
  print('   |   |')
  print(' ' + str_state[1] + ' | ' + str_state[2] + ' | ' + str_state[3])
  print('   |   |')

In this way, easy to read and maintenance.

Answer 3

The problem is that you never set the variable inttostr to the string you create. In your code

for i in aiboard:
        inttostr = aiboard[i]
        str(inttostr)
        aiboard[i] = inttostr

inttostr remains an int. A couple of ways to fix this.

for i in aiboard:
        inttostr = aiboard[i]
        inttostr= str(inttostr)
        aiboard[i] = inttostr

or better yet:

for i in aiboard:
        aiboard[i]= str(aiboard[i])

Answer 4

A Pythonic way to convert is:

aiboard_str = [str(i) for i in aiboard]

Now print the board as before.