A brief introduction to the use of the Len () function in Python

function: Len ()

1: Function: Returns the length of string, list, dictionary, tuple, etc.

2: Syntax:len (str)

3: Parameters:
STR: string, list, dictionary, tuple, etc. to be computed

4: Return value : Length of elements such as strings, lists, dictionaries, tuples, and so on

5: Example
5.1, calculate the length of the string:

>>> s = "Hello good boy Doiido" >>> Len (s) 21

5.2. Count the number of elements in the list:

>>> L = [' h ', ' e ', ' l ', ' l ', ' O ']>>> len (L) 5

5.3. Calculate the total length of the dictionary (that is, the total number of key-value pairs):

>>> d = {' num ': 123, ' name ': ' Doiido '}>>> len (d) 2

5.4, calculate the number of tuple elements:

>>> t = (' G ', ' o ', ' o ', ' d ') >>> Len (t) 4

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