In Python source code, an f-string is a literal string, prefixed with ‘f’, which contains expressions inside braces. From here: When an 'r' or 'R' prefix is present, a character following a backslash is included in the string without change, and all backslashes are left in the string. The index of the last character will be the length of the string minus one. In Python, strings are ordered sequences of character data, and thus can be indexed in this way. of built-in/library functions to modify strings. STR() would be an attempt to invoke some function or instantiate some class that was named “STR” (all-caps). Python raw string is created by prefixing a string literal with ‘r’ or ‘R’. Strings in Python are objects and Python provides a no. String indexing in Python is zero-based: the first character in the string has index 0, the next has index 1, and so on. It should be noted that an f-string is really an expression evaluated at run time, not a constant value. In this tutorial you'll learn how to use Python's rich set of operators, functions, and methods for working with strings. Python does not support a character type; these are treated as strings of length one, thus also considered a substring. Best of Python Strings, Functions and Examples. The str() function returns the string version of the given object. In this tutorial, we will learn about Python str() in detail with the help of examples. Python has a built-in string class named "str" with many handy features (there is an older module named "string" which you should not use). Python Overview Python Built-in Functions Python String Methods Python List Methods … What is docstring in Python? The string module contains a number of useful constants and classes, as well as some deprecated legacy functions that are also available as methods on strings. 'hello' is the same as "hello". Concatenation of Two or More Strings. String concatenation in Python using join() example. Python raw string treats backslash (\) as a literal character. So, to solve this, the docstring was introduced. An error. Luckily, Python makes string manipulation very simple, especially when compared to other languages and even older versions of Python. Python documentation strings (or docstrings) provide a convenient way of associating documentation with Python modules, functions, classes, and methods. The + operator does this in Python. Python source code is case sensitive. Creating strings is as simple as assigning a value to a variable. However, the join() method works with iterators like lists, tuple, etc. This is useful when we want to have a string that contains backslash and don’t want it to be treated as an escape character.