2d list in python

Create a 2d array in python

def build_matrix(rows, cols):
    matrix = []

    for r in range(0, rows):
        matrix.append([0 for c in range(0, cols)])

    return matrix

if __name__ == '__main__':
    build_matrix(6, 10)

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

2d array python3

# 5x6, 2-d array of booleans using list comprehension:

matrix = [[False for col in range(6)] for row in range(5)]

# 6x5, 2-d array of banana's using list comprehension:

matrix = [['banana' for col in range(5)] for row in range(6)]

How to input 2-d array in python

matrix = [input().split() for i in range(no_of_rows)] # if only row is given and the number of coloumn has to be decide by user
matrix= [[input() for j in range(no_of_cols)] for i in range(no_of_rows)] # if both row and coloumn has been taken as input from user

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 vote170 views1 answer
Assignment 7.1 python data structures
Python
8 votes161 views2 answers
Python count files directory
Python
5 votes158 views5 answers
Minecraft tutorial
Python
0 vote162 views1 answer
Python find minimum date in list
Python
1 vote213 views1 answer
Import status in django rest framework
Python Django
0 vote161 views2 answers
Bokeh bar chart
Python
0 vote159 views1 answer
Pandas split groupby
Python
3 votes170 views1 answer
Make length string in pandas
Python
0 vote163 views1 answer
Print nested dictionary values in python
Python
0 vote167 views1 answer
How to fill an array with consecutive numbers
Python