python 1 meaning - PrivacyWall

https://stackoverflow.com/questions/15535205/what-does-1-mean-do-...

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What does [:-1] mean/do in python? - Stack Overflow

It means "all elements of the sequence but the last". In the context of f.readline()[:-1] it means "I'm pretty sure that line ends with a newline and I want to strip it".

https://www.freecodecamp.org/news/python-slicing-how-to-slice-an-...

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Python Slicing – How to Slice an Array and What Does [::-1] Mean?

Slicing an array is the concept of cutting out – or slicing out – a part of the array. How do you do this in Python? I'll show you how in this article. If you like watching video content to supplement your reading, here's a video version of this article as well. What is an Array?

https://www.freecodecamp.org/news/what-does-mean-in-python-operat...

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What Does :: Mean in Python? Operator Meaning for Double Colon

You can use the double colon (::) in Python to slice or extract elements in a collection such as a list or string. In this article, you'll learn the syntax and how to use :: to slice a list in Python. You'll also learn how to use the parameters associated with this method of slicing. Here's what the syntax for the double colons looks like:

https://stackoverflow.com/questions/3453085/what-is-double-colon-...

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What is :: (double colon) in Python when subscripting sequences?

it means 'nothing for the first argument, nothing for the second, and jump by three'. It gets every third item of the sequence sliced. Extended slices is what you want. New in Python 2.3. It returns every item on a position that is a multiple of 3. Since 3*0=0, it returns also the item on position 0.

https://www.w3schools.com/python/python_operators.asp

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Python Operators - W3Schools

Operators are used to perform operations on variables and values. In the example below, we use the + operator to add together two values: Python divides the operators in the following groups: Arithmetic operators are used with numeric values to perform common mathematical operations: Assignment operators are used to assign values to variables:

https://www.geeksforgeeks.org/python-list-slicing/

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Python List Slicing - GeeksforGeeks

Python list slicing is fundamental concept that let us easily access specific elements in a list. In this article, we’ll learn the syntax and how to use both positive and negative indexing for slicing with examples. Example: Get the items from a list starting at position 1 and ending at position 4 (exclusive). Parameters:

https://coderivers.org/blog/python-1-meaning/

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Demystifying `python ::1` Meaning: A Comprehensive Guide

One such element is the use of ::1 in Python. This notation is related to Python's powerful slicing capabilities, which are fundamental for working with sequences like strings, lists, and tuples. Understanding what ::1 means and how to use it effectively can significantly enhance your Python programming skills.

https://embeddedinventor.com/pythons-equal-to-operator-meaning-an...

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Python’s “==” (double equal) Operator’s Meaning Explained Using Examples!

What is == in python? ‘==’ is an operator which is used to compare the equality of 2 objects in Python. The objects under comparison can be strings or integers or some special user-defined class. How to read “==” ? The “==” symbol is called “ is equal to ” or “ equal to ” for short and is used in many programming languages like C, C++, Python, etc.

https://learnpython.com/blog/python-operators-cheat-sheet/

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Python Operators Cheat Sheet - LearnPython.com

Python operators are special symbols or keywords used to perform specific operations. Depending on the operator, we can perform arithmetic calculations, assign values to variables, compare two or more values, use logical decision-making in our programs, and more.

https://blog.csdn.net/weixin_44350337/article/details/116034510

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Python中[-1]、[:-1]、[::-1]、[n::-1]、[:,:,0]、[…,0]、[…,::-1] 的理解

在python中会出现 [-1]、 [:-1]、 [::-1]、 [n::-1]、 [:,:,0]、 […,0]、 […,::-1]，他们分别是什么意思呢，这里就来详尽的说一下：下面的a = [1,2,3,4,5] 原型是 [n : m]，前闭后开，索引从零开始，第一个索引指定可以取到，即n可以取到，后一个索引不可取到，即m不可取到。原型是 [n : m : k]，代表的是从那一段开始取，隔几个取一次。其中，n代表的是取值开始的索引，因此该索引必将被取到，m代表的是取值结束的索引，和上面一样，该值不能被取到。 k代表的是间隔，间隔可正可负，正值代表正向顺序跳取，负值代表反向跳取。

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