Python – Convert Strings to Character Matrix

Sometimes, while dealing with String lists, we can have a problem in which we need to convert the Strings in list to separate character list. Overall converting into Matrix. This can have multiple applications in data science domain in which we deal with lots of data. Lets discuss certain ways in which this task can be performed.

Method #1 : Using List comprehension
This is one way in which this task can be performed. In this, we convert the string to list of characters using list() and convert the result to desired matrix.

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# Python3 code to demonstrate 
# Convert Strings to Character Matrix
# using List comprehension
  
# Initializing list
test_list = ['gfg', 'is', 'best']
  
# printing original list
print("The original list is : " + str(test_list))
  
# Convert Strings to Character Matrix
# using List comprehension
res = [list(sub) for sub in test_list]
              
# printing result 
print ("List String after conversion to Matrix : " + str(res))

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Output :

The original list is : [‘gfg’, ‘is’, ‘best’]
List String after conversion to Matrix : [[‘g’, ‘f’, ‘g’], [‘i’, ‘s’], [‘b’, ‘e’, ‘s’, ‘t’]]

 



Method #2 : Using loop + list()
This is brute force way to perform this task. In this, we run loop and and convert each string to character list using list().

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# Python3 code to demonstrate 
# Convert Strings to Character Matrix
# using loop + list()
  
# Initializing list
test_list = ['gfg', 'is', 'best']
  
# printing original list
print("The original list is : " + str(test_list))
  
# Convert Strings to Character Matrix
# using loop + list()
res = []
for sub in test_list:
    res.append(list(sub))
  
# printing result 
print ("List String after conversion to Matrix : " + str(res))

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Output :

The original list is : [‘gfg’, ‘is’, ‘best’]
List String after conversion to Matrix : [[‘g’, ‘f’, ‘g’], [‘i’, ‘s’], [‘b’, ‘e’, ‘s’, ‘t’]]




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