connect 4 unknown erroer

[Help_me_Please]

This is the start of a 4 in a row game / connect 4. I am experiencing the error:

line 10, in is_valid_location
if board[bottom_row][column] == 0:
IndexError: index 5 is out of bounds for axis 0 with size 5


I would really appreciate some help thanks.

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import numpy as np turn = 0 game_over = False   def board_create(column, row):     board = np.zeros((row,column))     return board   def is_valid_location(column_choice, board, bottom_row):     if board[bottom_row][column] == 0:         return False     else:         return True   row = 5 column = int(input("How many columns: ")) board = board_create(column, row)   while not game_over:     if turn == 0:         invalid = True         bottom_row = row         while invalid == True:             column = str(column)             column_choice = int(input("Player 1 make your selection (1-"+column+"):"))             column = int(column)             invalid = is_valid_location(column_choice, board, bottom_row)     else:         while invalid == True:             column = str(column)             column_choice = int(input("Player 2 make your selection (1-"+column+"):"))             column = int(column)             invalid = is_valid_location(column_choice, board, bottom_row)     turn = turn + 1     turn = turn % 2

[buran]

IndexError: index 5 is out of bounds for axis 0 with size 5

axis is with size 5, so indexes are from 0 to 4

[Help_me_Please]

What does that mean? and so what do I need to change?

[perfringo]

What does that mean? and so what do I need to change?

There are zero-based index and there is finger-based index. Formula for converting:

finger-based index - 1 = zero-based index
zero-based index + 1 = finger-based index

Users count with their fingers, but for Python you need to convert it into zero-based index.

[Help_me_Please]

What do I change the line too, to avoid this issue.

[buran]

you take index as input from user and ask for number between 1 and column. Because indexes are zero-based, you need a number between 0 and column-1. It's up to you how you will achieve that - ask the user or post-process the user input before using it in your code that raise IndexError.

[ndc85430]

Note also that the function is_valid_location can be simplified to, e.g. return not board[bottom_row][column] == 0. Since the expression board[bottom_row][column] == 0 already evaluates to a boolean, the if and else are unnecessary.