# EASY ACCEPTED python solution

• ``````class Solution(object):
def check(self, board, start, choice):
numbers = []
for i in range (0, len(board)):
num = board[start][i]
if (choice== 'col'):
num = board[i][start]
if num != '.':
num = int(num)
if num < 0 or num > 9 or num in numbers:
return False
numbers.append(num)
return True

def check_row(self, board, start):
return self.check(board, start, 'row')

def check_col(self, board, start):
return self.check(board, start, 'col')

def check_square(self, board, row, col):
numbers = []
for i in range(row, row+3):
for j in range (col, col+3):
print i, j
num = board[i][j]
if num != '.':
num = int(num)
if num < 0 or num > 9 or num in numbers:
return False
numbers.append(num)
return True

def isValidSudoku(self, board):
"""
:type board: List[List[str]]
:rtype: bool
"""
result = True
for i in range (0, 9):
result = result and self.check_row(board, i)
result = result and self.check_col(board, i)
if i % 3 == 0:
for j in range (0, 9):
if j % 3 == 0:
result = result and self.check_square(board, i, j)
return result``````

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