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len() function with example in Python

Python len() function: Here, we are going to learn about the len() function in Python with example.
Submitted by IncludeHelp, on April 02, 2019

Python len() function

len() function is a library function in Python, it is used to get the length of an object (object may a string, list, tuple, etc). It accepts an object and returns its length (total number of characters in case of a string, the total number of elements in case of an iterable).

Syntax:

    len(object)

Parameter:object – an object like string, list etc whose length to be calculated.

Return value: int – returns length of the object.

Example:

    Input:
    a = "Hello world!"
    print(len(a))
    
    Output:
    12

Python code to get the length of an object (string, list etc)

# python code to demonstrate an example
# of len() function

a = "Hello world!"          # string value
b = [10, 20, 30, 40, 50]    # list
c = ["Hello", "World!", "Hi", "Friends"] # list of strings
d = ("Hello", "World!", "Hi", "Friends") # Tuple

print("length of a: ", len(a))
print("length of b: ", len(b))
print("length of d: ", len(c))
print("length of c: ", len(d))

Output

length of a:  12
length of b:  5
length of d:  4
length of c:  4