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What does [:-1] mean/do in python? - Stack Overflow
Working on a python assignment and was curious as to what [:-1] means in the context of the following code: instructions = f.readline()[:-1] Have searched on here on S.O. and on Google but to no avail. Would love an explanation!
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Python Slicing – How to Slice an Array and What Does [::-1] Mean?
Learn how to slice an array in Python using colons and square brackets. See examples of slicing with different start, end and step arguments.
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Python increment by 1 - AskPython
Learn how to use the augmented assignment operator += to increment a variable by 1 in Python. See examples with numbers, strings, lists, and dictionaries.
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Releases - Python.org
Python releases are now listed on the downloads page. This page only provides links to older releases which are not listed in the release database. Python 1.6.1 (September 2000) Python 1.5.2 (April 1999) Older source releases (1.0.1 - 1.6) Ancient source releases (pre 1.0) Python 1.5 binaries; Python 1.4 binaries; Python 1.3 binaries; Python 1. ...
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Learn Python - Free Interactive Python Tutorial
Welcome to the LearnPython.org interactive Python tutorial. Whether you are an experienced programmer or not, this website is intended for everyone who wishes to learn the Python programming language. You are welcome to join our group on Facebook for questions, discussions and updates.
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Python中[-1]、[:-1]、[::-1]、[n::-1]、[:,:,0]、[…,0]、[…,::-1] 的理解
Python中切片原理 0 下标说明 无论是str还是list等,从左到右下标从0开始,从右到左下标从-1开始 如:str = 'python',下标示意图如下: 1 两参数:[开始:结束] 知识点1: 遵循左闭右开原则,如:[0:9]等价于数学中的[0,9) 例子: # 字符串中用法 str = 'python' print(str[0:3 ...
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Welcome to Python 101! — Python 101 1.0 documentation
Welcome to Python 101!¶ Learn how to program with Python 3 from beginning to end. Python 101 starts off with the fundamentals of Python and then builds onto what you’ve learned from there. The audience of this book is primarily people who have programmed in the past but want to learn Python.
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Python Essentials 1
Python Essentials 1. Dive into programming, learn Python from scratch, and prepare for the PCEP – Certified Entry-Level Python Programmer certification. This introductory course gives you an opportunity to dive into Python and computer programming with no specific prerequisites or prior knowledge required.
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Welcome to Python.org
Python is a versatile and easy-to-learn language that lets you work quickly and integrate systems more effectively. Download the latest version, read the documentation, find jobs, events, success stories and more on Python.org.
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Python For Loops - W3Schools
Python For Loops. A for loop is used for iterating over a sequence (that is either a list, a tuple, a dictionary, a set, or a string).. This is less like the for keyword in other programming languages, and works more like an iterator method as found in other object-orientated programming languages.. With the for loop we can execute a set of statements, once for each item in a list, tuple, set etc.