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Find the length of a string in python (4 ways)

| | |

Examples:

 Input: ’hello world!’ Output: 12 Input: ’hello’ Output: 14 

Methods:

  • Using built-in function flax. The built-in len function returns the number of elements in the container.

    # Python code to demonstrate line length
    # using len

     

    str = " geeks "

    print ( len ( str ))

    Exit:

     5 
  • Usage for loop and in statement. The line can be repeated directly in the for loop. Keeping a count of the number of iterations will result in the length of the line.

    # Python code to demonstrate line length
    # used to loop

     
    # Returns the line length

    def findLen ( str ):

    counter = 0  

    for i in str :

    counter + = 1

    return counter

     

     

    str = "geeks"

    print (findLen ( str ))

    Exit :

     5 
  • Using while loop and Slicing. We slice the string, making it shorter by 1 at each iteration, and we end up with an empty string. This is when the cycle stops. Keeping a count of the number of iterations will result in the length of the line.

    Exit :

     5 
  • Using string methods concatenates and counts. The string concatenation method takes an iterable and returns a string, which is the concatenation of the strings in the iterable. The separator between the elements is the original string on which the method is called. Using concatenation and counting the concatenated line on the original line will also result in line length.

  • # Python code to demonstrate line length
    # using a loop while.

     
    # Returns the line length

    def findLen ( str ):

    counter = 0

    while str [counter:]:

    counter + = 1

      return counter

     

    str = "geeks"

    print ( findLen ( str ))

    # Python code to demonstrate line length
    # using connection and bill

      
    # Returns line length

    def findLen ( str ):

    if not str :

      return 0

      else :

      some_random_str = ’py’

    return ((some_random_str) .join ( str )). count (some_random_str) + 1

     

    str = "geeks"

    print (findLen ( str ))

    Exit:

     5 

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