/Python/How to create an empty 2d list in python

How to create an empty 2d list in python

#To create an empty 2d list of size n
l=[]
for i in range(n):
	l.append([])
#To create an 2d list of size rows and columns
l=[[0 for j in range(len(column))]for i in range(len(row))]

2d array python initialize

>>> b = [['a']*3]*3
>>> b
[['a', 'a', 'a'], ['a', 'a', 'a'], ['a', 'a', 'a']]
>>> b[1][1]
'a'
>>> b[1][1] = 'b'
>>> b
[['a', 'b', 'a'], ['a', 'b', 'a'], ['a', 'b', 'a']]

Source: stackoverflow.com

Similar codes

1 vote302 views1 answer
Python find dict in list of dict by id
Python
3 votes335 views1 answer
Clean punctuation from string python
Python
0 vote283 views1 answer
DRF: get ip address
Python
0 vote293 views1 answer
Add one element to tuple python
Python
0 vote285 views1 answer
Get just filename without extension from the path python
Python
0 vote280 views1 answer
If between two values pythpn
Python
12 votes252 views3 answers
Write list to text file python
Python
0 vote286 views1 answer
Python generate public private key pair
Python
0 vote292 views2 answers
Phow to install python modules in no internet in sercer
Python
0 vote338 views1 answer
How to create a spark schema using a string
Python