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Python String Length

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Write a Program to find Python String Length. This is one of the frequently asked question. The python programming language provides a building-in common function called len. This can help you to find length of a string in Python, or any other object type.

Python String Length Example

In this string length program, we declared an empty string. Next, we find the string length using Len function. Next, we are finding the length of tutorial gateway and python programming. Remember, Python len function counts empty space as 1. It means, length of he ll is 5

TIP: Please refer String article to understand everything about Strings in Python.

# Python String Length Example

str1 = ''
print("\n Original String str1 = ", str1)
print("Length of a String str1 = ", len(str1))

str2 = 'Tutorial Gateway'
print("\n Original String str2 = ", str2)
print("Length of a String str2 = ", len(str2))

str3 = 'Python Programming'
print("\n Original String str3 = ", str3)
print("Length of a String str3 = ", len(str3))

OUTPUT

Python String Length 1

String Length Example 2

This program is same as the first string length example. However, this time, we are allowing the users to enter their own string. Next, we are finding the length of a user given string

# String Length Example

str1 = input("Please enter the string you want : ")

print("\n Original String str1 = ", str1)

print("The length of a Given string = ", len(str1))

OUTPUT

Python String Length 2

Let me try with different string

Python String Length 3

Python String Length Example 3

In all the above specified examples, we used the built-in function len. However, you can also find string length without using any built-in function. In real-time, you may not use this but, in interviews this can test your coding skills.

In this Python string length program, we are using For Loop to iterate each and every character in a user given string. Inside the Loop, we are increment the length to count the characters in a string. Next, outside the loop, we are printing the final length as an output.

# Python String Length Example

str1 = input("Please enter the string you want : ")
length = 0

print("\n Original String str1 = ", str1)

for i in str1:
    length = length + 1

print("The length of a Given string = ", length)

OUTPUT

Python String Length 4

String Length Example 4

In this python string length example, we are using Functions to separate the logic to find the length of a string. Next, we are calling that function to find the length ion a user entered string.

# Python String Length Example

def stringLength(string):
    length = 0
    for i in string:
        length = length + 1
    return length
        
str1 = input("Please enter the string you want : ")

print("\n Original String str1 = ", str1)

strlength = stringLength(str1)

print("The length of a Given string = ", strlength)

OUTPUT

Python String Length 5

Let me re-run and enter new word. This can help you understand the String Length function in more detail

Python String Length 6