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How to find the length of a string in Python

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There are two methods to find the length of a string in Python.

Using the len() method

To calculate the length of a string in Python, you can use the built-in len() method.

It takes a string as a parameter and returns an integer as the length of that string. For example, len(“educative”) will return 9 because there are 9 characters in “educative”.

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Using the for loop

If you don’t want to use the len() method, you can calculate the length by iterating the string using a for-loop and incrementing a counter variable in every iteration. The following code shows how this is done:

counter = 0
for c in "educative": # traverse the string “educative”
counter+=1 #increment the counter
print (counter) # outputs the length (9) of the string “educative”

Here’s how this method works:

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python
length of string
len method
array traversal

Grokking Modern System Design Interview for Engineers & Managers

Ace your System Design Interview and take your career to the next level. Learn to handle the design of applications like Netflix, Quora, Facebook, Uber, and many more in a 45-min interview. Learn the RESHADED framework for architecting web-scale applications by determining requirements, constraints, and assumptions before diving into a step-by-step design process.

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