Summary: in this tutorial, you’ll learn about Python slicing and how to use it to extract data from and assign data to a sequence. Show Python slicing reviewSo far you’ve learned about slicing such as list slicing. Technically, slicing relies on indexing. Therefore, slicing only works with sequence types. For mutable sequence types such as lists, you can use slicing to extract and assign data. For example:
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However, you can use slicing to extract data from immutable sequences. For example:
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If you attempt to use slicing to assign data to an immutable sequence, you’ll get an error. For example:
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The slicing Python slice typeEverything
in Python is an object including the slice. A slice is actually an object of the
The
For example:
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So instead of using the slicing notation:
… you can use the slice object instead:
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Python Slicing: start and stop boundsThe slice In other words, it returns all elements of the sequence at the index
When
… Python uses Both The following example returns the entire list:
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Since the stop bound is 100, Python uses the The following example returns an empty list:
Because the Negative start and stop boundsThe slice object also accepts negative
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To
get the
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The step valueSlices support the third argument, which is the step value. The step value defaults to 1 if you don’t specify it:
It’s equivalent to:
See the following example:
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The indices methodA slice object essentially defines a sequence of indices for selecting elements of a sequence. To make it more convenient, the
It returns a new tuple:
And you can use the values of this tuple to generate a list of indices using the
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How it works.
Summary
Did you find this tutorial helpful ? What is slicing in Python with example?Python slice() Function
The first function takes a single argument while the second function takes three arguments and returns a slice object. This slice object can be used to get a subsection of the collection. For example, if we want to get first two elements from the ten element? s list, here slice can be used.
What is slicing list in Python?In short, slicing is a flexible tool to build new lists out of an existing list. Python supports slice notation for any sequential data type like lists, strings, tuples, bytes, bytearrays, and ranges. Also, any new data structure can add its support as well.
What is slicing of string in Python?String slicing in Python is about obtaining a sub-string from the given string by slicing it respectively from start to end.
What is splicing in Python?What is String Splicing in Python? String splicing or indexing is a method by which we can access any character or group of characters from a python string. In python, characters or sub strings of a string can be accessed with the help of square brackets [ ] just like we access elements from a list in python.
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