Python | Convert numeric string to integers in mixed list

Python Methods and Functions | String Variables

Method # 1: Using the comprehension list + isdigit()
This is one way to accomplish this task. In this we check for each element of the string if it is a number using isdigit and then convert to int if it is one. Iteration uses list comprehension.

# Python3 code to demonstrate how it works
# Convert string numbers to integers in a mixed list
# using comprehension list + isdigit ()

 
# initialize the list

test_list = [ "gfg" , "1" , "is" , "6" , "best" ]

  
# print of the original list

print ( "The original list: " + str (test_list))

 
# Convert string numbers to integers in a mixed list
# use comprehension list + isdigit ()

res = [ int (ele) if ele.isdigit () else ele for ele in test_list]

 
# res print ultat

print ( "List after converting string numbers to integers: " + str (res))

Output:

 The original list: ['gfg',' 1', 'is',' 6', 'best'] List after converting string numbers to integers: [' gfg', 1, 'is', 6,' best'] 

Method # 2: Using map () + lambda + isdigit ()
This task can also be accomplished using the above functions. In this we are doing the iteration task using map () and a lambda function.

# Python3 code to demonstrate how it works
# Convert string numbers to integers in a mixed list
# using map () + lambda + isdigit ()

 
# initialize list

test_list = [ "gfg" , "1" , "is" , "6" , " best " ]

  
# print the original list

print ( "The original list:" + str (test_list))

 
# Convert string numbers to integers in a mixed list
# using map () + lambda + isdigit ()

res = list ( map ( lambda ele: int (ele) if ele.isdigit () 

else ele, test_list))

 
# print result

print ( "List after converting string numbers to integers: " + str (res))

Output:

 The original list: ['gfg ',' 1', 'is',' 6', 'best'] List after converting string numbers to integers: [' gfg', 1, 'is', 6,' best'] 




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