/Python/How to find the neighbors of an element in matrix python

How to find the neighbors of an element in matrix python

mat = "NxN matrix"
a, b = (2, 3) # the index of the element 
neighbors = [mat[i][j] for i in range(a-1, a+2) for j in range(b-1, b+2) if i > -1 and j > -1 and j < len(mat[0]) and i < len(mat)]

Similar codes

0 vote168 views1 answer
How to read frame width of video in cv2
Python
0 vote155 views1 answer
Downolad fileby python requests
Python
12 votes211 views5 answers
Python async await
Python
0 vote168 views1 answer
Scipy version check
Python
0 vote159 views1 answer
Length of list without len function
Python
0 vote169 views1 answer
Adding new fields in ModelAdmin with fieldsets to edit user, and add_fieldsets whan creating a new user
Python
30 votes191 views6 answers
List comprehension if else
Python
1 vote165 views1 answer
Regression r2 tensor flow
Python
1 vote175 views1 answer
Change text color docx-python
Python
1 vote177 views2 answers
Flask print to console
Python