Python error: String index out of range python

String index out of range python is an IndexError in python. It generates when you try to access an index of a string that does not exist. In other words, if you are trying to …

Python error_ String index out of range python

String index out of range python is an IndexError in python. It generates when you try to access an index of a string that does not exist.

In other words, if you are trying to get a character from a string at a certain point and that point does not include in the string, you will the string index out of range IndexError.

What is Index Error:

In python, IndexError generates when you are trying to access an invalid index of the string.

For example, “String index out of range.”

Python error: String index out of range python

The string is a single-dimensional array of characters in Python as the array is recognized in indices, so the string index out of range error popup when the index you want to reach does not exist.

If you want a character from a string and the index with that character does not exist, you will find the error as you are searching for a character that does not exist in the string.

Why string index out of range occur:

Take a look at the following example:

In Python, the index of string starts with 0. So if we take a string like “Python.

Python
012345

Now, as Python contains six letters, the index of the string starts with 0. For python, the first index is 0, and the last index is 5. So, if you want to find a character at index 6, you will get the error “string index out of range.”

Take another example:

Example:

thing = "table"
print(thing[5])

Output:

Solution: To not get this error, you have to keep in mind the fact that the string index starts with 0. But if you are a beginner, you can solve this problem by first knowing the length of the string:

thing = "table"
print(len(thing))

Output:

So when you check the length of the string with the help of len() function, it will give the length 5. But you have to keep in mind that the length starts with 1, unlike index that starts with 0. So the maximum index of a string in python is “length – 1.”

Once you check and confirm the total length of the string, you will then know that the maximum index range must be 1 less than the length of the string. 

String index out of range Python – Length:

String index out of range error occurs when you try to access an item from a non-existing index. You can check the length of the string by using the len() function. The len() will always return you the exact amount of number that a string contains.

For example, here is a code that returns the length of the string.

program = "Python"
print(len(program))

Python has a total of 6 characters, and the output of the example will also be 6.

Output:

But the thing you have to keep in mind is that the length starts with 1, unlike the index that starts with 0. So the maximum index of a string in python is “length – 1.”

Python IndexError: list index out of range:

The IndexError: list index out of range generates when you are trying to access the index that does not exist in the list.

For example, we create a list of numbers are trying to extract one of its characters.

x=[1,2,3,4,5,6] 
print(x[7])

Output:

This error can be solved by using the len() and range() functions.

x=[1,2,3,4,5,6] 
for i in range(0,len(x)):
    print(x[i])

The range() function will return a sequence of numbers from 0 to the integer as a parameter. The len() function is used to find the length of the list. In this way, no matter what will be the length of the list, we would not go out of range.

Output:

Python loop: list index out of range:

The IndexError: list index out of range generates when you are trying to access the index that does not exist in the list.

For example, we create a list of numbers are trying to extract one of its characters.

x=[1,2,3,4,5,6] 
print(x[7])

Output:

This error can be solved by using the len() and range() functions.

x=[1,2,3,4,5,6] 
for i in range(0,len(x)):
    print(x[i])

The range() function will return a sequence of numbers from 0 to the integer as a parameter. The len() function is used to find the length of the list. In this way, no matter what will be the length of the list, we would not go out of range.

Output:

Conclusion:

The IndexError: string index out of range popups when you try to access or extract a character from that index of the string that does not exists.

The best way to solve this problem is to know the length of the string either manually or by using the len() function.

It’s a good approach for the programmers to know the nature of each data type of the language so that no bug regarding this mistake will be found.

But in the cases of those data types that contain multiple characters like an array, string, etc., if the beginners or a programmer that switch the language, it is better to completely learn about its properties so no bug will pop up.

Suggested Read: Remove Brackets from list Python

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