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

function: Len ()

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

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

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

5.2, calculate the number of elements of 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 values):

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

5.4. Calculate the number of tuple elements:

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