Python – Convert Integer Matrix to String Matrix
Given a Matrix with integer values, convert each element to String.
Input : test_list = [[4, 5, 7], [10, 8, 3], [19, 4, 6]]
Output : [[‘4’, ‘5’, ‘7’], [’10’, ‘8’, ‘3’], [’19’, ‘4’, ‘6’]]
Explanation : All elements of Matrix converted to Strings.Input : test_list = [[4, 5, 7], [10, 8, 3]]
Output : [[‘4’, ‘5’, ‘7’], [’10’, ‘8’, ‘3’]]
Explanation : All elements of Matrix converted to Strings.
Method #1 : Using str() + list comprehension
The combination of above methods can be used to solve this problem. In this, we perform conversion using str() and list comprehension is used to iterate for all the elements.
Python3
# Python3 code to demonstrate working of # Convert Integer Matrix to String Matrix# Using str() + list comprehension # initializing listtest_list = [[4, 5, 7], [10, 8, 3], [19, 4, 6], [9, 3, 6]] # printing original listprint("The original list : " + str(test_list)) # using str() to convert each element to string res = [[str(ele) for ele in sub] for sub in test_list] # printing result print("The data type converted Matrix : " + str(res)) |
The original list : [[4, 5, 7], [10, 8, 3], [19, 4, 6], [9, 3, 6]] The data type converted Matrix : [['4', '5', '7'], ['10', '8', '3'], ['19', '4', '6'], ['9', '3', '6']]
Method #2 : Using str() + map()
The combination of above functions can also be used to solve this problem. In this, we use map() to extend the string conversion to all row elements.
Python3
# Python3 code to demonstrate working of # Convert Integer Matrix to String Matrix# Using str() + map() # initializing listtest_list = [[4, 5, 7], [10, 8, 3], [19, 4, 6], [9, 3, 6]] # printing original listprint("The original list : " + str(test_list)) # using map() to extend all elements as string res = [list(map(str, sub)) for sub in test_list] # printing result print("The data type converted Matrix : " + str(res)) |
The original list : [[4, 5, 7], [10, 8, 3], [19, 4, 6], [9, 3, 6]] The data type converted Matrix : [['4', '5', '7'], ['10', '8', '3'], ['19', '4', '6'], ['9', '3', '6']]
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