# Python | Lexicographically smallest string in a mixed list

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Method # 1: Using ` min () + isinstance () ` + list comprehension
This task can be accomplished using a combination of the above functions. In this case, the ` min () ` functions perform the task of finding the smallest string, and ` isinstance () ` is used to check for the presence of a string.

 ` # Python3 code to demonstrate how it works ` ` # Lexicographically smallest line in the mixed list ` ` # Using min () + isinstance () + list comprehension `   ` # initializing list ` ` test_list ` ` = ` ` [` ` 1 ` `, ` ` 2 ` `, ` ` 4 ` `, ` ` "GFG" ` `, ` ` 5 ` `, ` `" IS "` `, ` ` 7 ` `, ` ` "BEST" ` `] `   ` # print original list ` ` print ` ` (` ` "The original list is:" ` ` + ` ` str ` ` (test_list)) ` ` `  ` # Lexicographically smallest line in a mixed list ` ` # Using min () + isinstance () + list comprehension ` ` res ` ` = ` ` min ` ` ( sub ` ` for ` ` sub ` ` in test_list if isinstance ( sub, str )) ``   # print result print ( "The Lexicographically smallest string is:" + str (res)) `

Exit:

` The original list is: [1, 2, 4, ’GFG’, 5,’ IS’, 7, ’BEST’] The Lexicographically smallest string is: BEST `

Method # 2: Using ` min () ` + lambda + `filter()`
A combination of the above functions can also be used to accomplish this specific task. In this we perform the task of comprehending a list using ` filter () ` and a lambda, and the ` min ` function is used to perform the usual task of finding the smallest string.

 ` # Python3 code to demonstrate how it works ` ` # Lexicographically smallest string in the mixed list ` ` # Using min () + lambda + filter () `   ` # initializing list ` ` test_list ` ` = ` ` [ ` ` 1 ` `, ` ` 2 ` `, ` ` 4 ` `, ` ` "GFG" ` `, ` ` 5 , "IS" , 7 , "BEST" ] ``   # print original list print ( " The original list is: " + str (test_list))    # Lexicographically smallest line in the mixed list # Using min () + lambda + filter () res = min ( filter ( lambda < / code> s: isinstance (s, str ), test_list))    # print result print ( "The Lexicographically smallest string is:" + str (res)) `

Output:

` The original list is: [1, 2, 4, ’GFG’, 5,’ IS’, 7, ’BEST’] The Lexicographically smallest string is: BEST `

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