Python | Convert case of elements in a list of strings

Given a list of strings, write a Python program to convert all string from lowercase/uppercase to uppercase/lowercase.

Input : ['GeEk', 'FOR', 'gEEKS']
Output: ['geeks', 'for', 'geeks']

Input : ['fun', 'Foo', 'BaR']
Output: ['FUN', 'FOO', 'BAR']

 
Method #1 : Convert Uppercase to Lowercase using map function

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# Python code to convert all string
# from uppercase to lowercase.
  
# Using map function
out = map(lambda x:x.lower(), ['GeEk', 'FOR', 'gEEKS'])
  
# Converting it into list
output = list(out)
  
# printing output
print(output)

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Output:


        
          
          
          
        

            

['geek', 'for', 'geeks']





 

Method #2: Convert Lowercase to Uppercase using List comprehension











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# Python code to convert all string 


# from uppercase to lowercase. 


  


# Initialisation 


input = ['fun', 'Foo', 'BaR'] 


  


# Converting 


lst = [x.upper() for x in input] 


  


# printing output 


print(lst) 



















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Output:


['FUN', 'FOO', 'BAR']






          
          
          
          

            

    

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