How to create 2d list in python

o=[]
for i in range(0,rows):
    x=[]
    for j in range(0,cols):
        x.append(0)
    o.append(x)
#if you use [[0]*cols]*rows all rows will become the same list
#so editing in one row will edit all rows

Python initialize a 2d array

x = [[foo for i in range(10)] for j in range(10)]
# x is now a 10x10 array of 'foo' (which can depend on i and j if you want)

Source: stackoverflow.com

How to create one list from 2d list python

>>> l = [[1, 2, 3], [4, 5, 6], [7], [8, 9]]
>>> sum(l, [])
[1, 2, 3, 4, 5, 6, 7, 8, 9]

2d list in python

def list_2D(r, c):
    l = []
    for i in range(r):
        x = [0] * c
        l.append(x)
    return l

Similar codes

0 vote193 views1 answer
Write set to txt python
Python
0 vote172 views1 answer
Password text in entry in tkinter
Python
0 vote168 views1 answer
Import cv2 illegal instruction (core dumped)
Python
6 votes206 views2 answers
Python config file
Python
97 votes171 views6 answers
Get json from file python
Python
0 vote156 views1 answer
From flask_paginate import get_page_parameter
Python
2 votes175 views2 answers
Python coding questions and answers
Python
122 votes163 views6 answers
Prompt python
Python
2 votes219 views3 answers
.first() in django
Python Django
-2 votes181 views1 answer
Python merge list no duplicates
Python