How To Find Length Of String In Python

Introduction

In this tutorial, we are going to discuss how we can notice string length in Python. A string'south length or size is mainly required while traversing over it or while performing some operations on it.

So, now let us look at the various methods applying which nosotros can find the length of a given cord in Python.

Methods to Detect String Length in Python

Nosotros can follow any one of the below-given methods to find string length in Python. We are going to discuss each one of them i-by-1.

ane. Using the len() method

Looking at the first method, and the easiest i, len() directly returns the length of the passed cord object where it is called. The len() method too works on other iterable objects similar lists. The below-given code illustrates how nosotros can use the role as well as how it works.

#Given string whose length is to be establish str1="Python is great!" impress("The given Cord is:",str1)  #calling our len() method to calculate #the length of str1 print("Length =",len(str1))

Output:

Find String Length in Python Using Len Method — String Length Using len() Method

Hither,

str1 is the given string,
Next, we directly telephone call the len() method with the cord and print the value returned past it. As we can see, the method gives us the right length for the given string, str1.

2. Defining our Ain Part to Find Cord Length in Python

Now, coming to the next technique, we can ascertain our own part(str_len() in our case) to calculate string length in Python.

Let usa see how nosotros can practise that:

#part that calculates length of the passed string def str_len(str1):     c=0    #counter initialised as 0     for i in str1:         c=c+i   #counter increased for each element     return c  #Given string whose length is to be establish str1="JournalDev" print("The given String is:",str1)  #calling our str_len() function to calculate #the length of str1 print("Length =",str_len(str1))

Output:

Str Len To Find String Length — String Length using User-defined function

In the code in a higher place:

We define a role str_len() which accepts a string and returns back the length for the same.
Inside the role, we initialize a counter, c=0 which practically counts the number of elements in the passed string. Nosotros iterate over the string and keep incrementing the counter. Hence, by the end of the for loop, c holds the length of the string. So, we render c.
To check whether our part is working as expected we calculate and print the length of the string, str1. We can run into from the output that the function returns a value 9 which is the desired output.

Conclusion

Then, in the tutorial, we learned how we tin can find string length in Python. I hope it helps you lot understand the topic well. For any questions, feel gratuitous to use the comments below.