How to Get the Length of a String in Python

Python is a fast and powerful open-source, interpretive programming language with extensive standard libraries. When programming in Python, you may need to find the length of a string. For example, you may want to evaluate the amount of characters that a user enters in a text field, and return an error if the text is too long. Using the built-in "len" function, you can quickly calculate the length of a string.

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Access your Python editor.

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Type:

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exampleString = 'This is my example string' len(exampleString);

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Press "Enter."

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In this example, Python reads the exampleString and calculates the number of characters in the string using the "len" function. In this example, Python returns '25.'

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Note that when calculating the length, Python counts all characters -- including white spaces and special characters.