Integers not converting to strings not converting to strings(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.

str() returns a string, it doesn't convert an into to a string inplace. — krock
– krock, Commented Feb 25, 2015 at 3:35

Avinash Raj · Accepted Answer · 2015-02-25 03:34:47Z

Since the items stored inside the abiword list are integers, you need to convert the datatype of element (you want to print) to string while printing.

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

lqhcpsgbl · Accepted Answer · 2015-02-25 03:45:01Z

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.

Matthew0898 · Accepted Answer · 2015-02-25 03:48:05Z

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])

josliber · Accepted Answer · 2015-09-04 01:15:27Z

1

A Pythonic way to convert is:

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

Now print the board as before.

edited Sep 4, 2015 at 1:15

josliber

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answered Sep 4, 2015 at 0:45

Prune

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