I am new to python

This is a relatively neat solution for me

Please tell me if there can be more improvements?

'''

class Solution(object):

def isValidSudoku(self, board):

"""

:type board: List[List[str]]

:rtype: bool

"""

```
def evaluation(list):
return len(set(list)) == len(list)
def column(i):
return [row[i] for row in board]
def block(i,j):
temp = []
for s in xrange(3):
for t in xrange(3):
temp.append(board[i+s][j+t])
return temp
#row evaluation
for row in board:
tmp = [strRow for strRow in row if strRow != '.']
if not evaluation(tmp):
return False
#column evaluation
for i in xrange(9):
tmp = [strColumn for strColumn in column(i) if strColumn != '.']
if not evaluation(tmp):
return False
#block evaluation
for i in xrange(3):
for j in xrange(3):
tmp = [strBlock for strBlock in block(3*i,3*j) if strBlock != '.']
if not evaluation(tmp):
return False
return True
```

'''