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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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1] in Python with Examples - Guru99
How to reverse a Python list using 1 in Python? The negative slicing and negative indexing can be applied to reverse a string or list in python. Let us take a string named “GURU99” to illustrate an example. Example. Python Code: b= "GURU99" print ("The list is", b) Substring=b[::-1] print (" The reverse of string GURU99 is", Substring) Output:
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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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What is the meaning of "int(a[::-1])" in Python? - Stack Overflow
To get the same result , you cannot fill out all three, you can put <start> as len(a)-1, but there is no <stop> index you can put to get the first element. Example - a[len(a)-1::-1].This is because <stop> index is exclusive, that is the element at that index is not taken in, also -1 means the last element , so there is no index that can be used to include the first element , other than leaving ...
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Meaning of list[-1] in Python - Stack Overflow
So, if you wanted the last element in array, you would call array[-1]. All your return c.most_common()[-1] statement does is call c.most_common and return the last value in the resulting list, which would give you the least common item in that list. Essentially, this line is equivalent to: temp = c.most_common() return temp[len(temp) - 1]
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Python Operators - W3Schools
W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.
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What does the percentage sign mean in Python [duplicate]
However, the string formatting behavior is supplemented as of Python 3.1 in favor of the string.format() mechanism: The formatting operations described here exhibit a variety of quirks that lead to a number of common errors ... In this case I used %s which means that it expects a string.
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-= Subtraction Assignment — Python Reference (The Right Way) 0.1 ...
Python Reference (The Right Way) latest Introduction; Definitions; Coding Guidelines; Fundamental Data Types; Built-In Functions; Comprehensions and Generator Expression; Container Data Access; Operators; Statements; Other Objects; Double Underscore Methods and Variables; Exceptions; Constants ...
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3. An Informal Introduction to Python
In addition to int and float, Python supports other types of numbers, such as Decimal and Fraction. Python also has built-in support for complex numbers, and uses the j or J suffix to indicate the imaginary part (e.g. 3+5j). 3.1.2. Text¶ Python can manipulate text (represented by type str, so-called “strings
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Operators and Expressions in Python
In this example, you use the Python equality operator (==) to compare two numbers.As a result, you get True, which is one of Python’s Boolean values.. Speaking of Boolean values, the Boolean or logical operators in Python are keywords rather than signs, as you’ll learn in the section about Boolean operators and expressions.So, instead of the odd signs like ||, &&, and ! that many other ...