Python - To Convert Matrix to String

When it is required to convert a matrix into a string, a simple list comprehension along with the ‘join’ method is used.

Example

Below is a demonstration of the same

my_list = [[1, 22, "python"], [22, "is", 1], ["great", 1, 91]]

print("The list is :")
print(my_list)

my_list_1, my_list_2 = ",", " "

my_result = my_list_2.join([my_list_1.join([str(elem) for elem in sub]) for sub in my_list])

print("The result is :")
print(my_result)

Output

The list is :
[[1, 22, 'python'], [22, 'is', 1], ['great', 1, 91]]
The result is :
1,22,python 22,is,1 great,1,91

Explanation

• A list of list is defined and is displayed on the console.

• Two variables are assigned to a comma and an empty space respectively.

• The list comprehension and ‘join’ method is used to iterate through the list and join the elements in two variables.

• This is assigned to a variable.

• This is the output that is displayed on the console.