How To Get The Length Of A String In Python?

As a Python developer working on a project for one of my clients, I recently faced an issue where I needed to determine the number of characters in a string. After researching and testing various methods, I discovered several ways to accomplish this task. In this tutorial, I will explain how to get the length of a string in Python. I will share my findings and provide detailed examples to help you understand better.

Table of Contents

Get the Length of a String in Python

Let us learn some important methods to get the length of a string in Python.

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Method 1: Use the len() Function

The len() function in Python returns the number of characters in a string.

Example:

# Using len() to find the length of a string
city = "San Francisco"
length = len(city)
print(f"The length of '{city}' is {length}.")

Output:

The length of 'San Francisco' is 13.

I executed the above example code and added the screenshot below.

Using the len() Function: This built-in function provides the most simple and efficient way to obtain the length of a string.

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Method 2: Iterate with a for Loop and the in Operator

By iterating through each character in the Python string, you can manually count the number of characters.

Example:

# Finding length by iterating through the string
state = "California"
count = 0
for char in state:
    count += 1
print(f"The length of '{state}' is {count}.")

Output:

The length of 'California' is 10.

I executed the above example code and added the screenshot below.

How to Get the Length of a String in Python

Iterating with a for Loop and the in Operator: By manually counting each character during iteration, you can determine the string’s length without relying on built-in functions.

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Method 3: Combine join() and count() Methods

This method involves joining the Python string with an empty separator and counting the occurrences of the separator.

Example:

# Using join() and count() to determine string length
president = "George Washington"
length = ''.join(president).count('') - 1
print(f"The length of '{president}' is {length}.")

Output:

The length of 'George Washington' is 17.

I executed the above example code and added the screenshot below.

Get the Length of a String in Python join() and count()

Combining join() and count() Methods: This approach involves joining the string with an empty separator and counting the occurrences of the separator to find the length.

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Method 4: Utilize str.count()

The str.count() method in Python can count the occurrences of a specific substring. By counting the empty string '' you can determine the length.

Example

# Using str.count() to find the length of a string
landmark = "Statue of Liberty"
length = landmark.count('') - 1
print(f"The length of '{landmark}' is {length}.")

Output:

The length of 'Statue of Liberty' is 16.

Utilizing str.count(): By counting the occurrences of an empty string within the target string and adjusting the count, you can ascertain its length.

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Conclusion

In this article, I explored g four different methods to get the length of a string in Python, such as using len() function, Iterating with a for loop and the in operator, combining join() and count() methods, and utilizing str.count().