Simply place a + between as many strings as you want to join together: >. The simplest and most common method is to use the plus symbol ( +) to add multiple strings together. See Why are slice and range upper-bound exclusive for more discussion of the design decisions behind the notation. This makes the step go backwards, including each element it steps on, resulting in the string being printed back in reverse: string = 'I’ll never turn to the dark side. There are a few ways of doing this, depending on what you’re trying to achieve. How does Python's slice notation work That is: when I write code like a x:y:z, a :, a ::2 etc., how can I understand which elements end up in the slice Please include references where appropriate. ![]() To reverse a string, we can set the step of the slice notation to -1. String = 'Now, young Skywalker, you will die.' # Prefix of length n In this case, -n will start counting from the end of the string, backwards, giving us a suffix: n = 4 In this particular example, the slice statement ::-1 means start at the end of the string and end at position 0, move with the step -1, negative one, which means one step backwards. We'll slice from the start to n and from -n to the end of the string. 6 Answers Sorted by: 83 Python 2: firstpart, secondpart string :len (string)/2, string len (string)/2: Python 3: firstpart, secondpart string :len (string)//2, string len (string)//2: Share Follow edited at 13:29 zamarov 165 2 16 answered at 3:07 Senthil Kumaran 54. How to Reverse a String in Python Some of the common ways to reverse a string are: Using Slicing to create a reverse copy of the string. txt 'Hello World' ::-1 print(txt) Create a slice that starts at the end of the string, and moves backwards. These features allow you to use slicing to directly generate a copy of a given string in reverse order. ![]() Since strings are sequences, they’re indexable, sliceable, and iterable. ![]() Indices can be positive or negative numbers. Python provides two straightforward ways to reverse strings. step - A number specifying the step of the slicing. To find the prefix or suffix of length n of a string, we'll use the same approach that can be used to find a tail or head of a list. You can extract a substring from a string by slicing with indices that get your substring as follows: string start:stop:step start - The starting index of the substring. This will omit the first four characters in the string: I am your fatherįinding the Prefix and Suffix of Length n with Slice Notation Let's go ahead and slice a string: string = 'No.
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