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bool value of a list in Python - Stack Overflow
In most cases, you only need to check whether the list is empty or not, you don't really need a boolean value. Python can see that you're evaluating an if statement and it calls bool() itself. If you really then a boolean value (for example, as output) then bool(my_list) is fine of course.
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Boolean list initialization – Python - GeeksforGeeks
Let's explore several ways to initialize a boolean list in Python. The most efficient way to initialize a boolean list with identical values is by using list multiplication. This approach creates a list with a predefined length and assigns the same boolean value to all elements. Explanation:
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Python Booleans: Use Truth Values in Your Code – Real Python
Booleans are considered a numeric type in Python. This means they’re numbers for all intents and purposes. In other words, you can apply arithmetic operations to Booleans, and you can also compare them to numbers: There aren’t many uses for the numerical nature of Boolean values, but there’s one technique you may find helpful.
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Python Booleans - W3Schools
Booleans represent one of two values: True or False. In programming you often need to know if an expression is True or False. You can evaluate any expression in Python, and get one of two answers, True or False. When you compare two values, the expression is evaluated and Python returns the Boolean answer:
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Booleans in Python
We will learn booleans, booleans of the constructs, operation on booleans, and operators that return booleans in Python. So, let’s get started. 1. True and. 2. False. Let us first talk about declaring a boolean value and checking its data type.
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5 Best Ways to Convert a Python List to Boolean - Finxter
When used with a list of Boolean values, it effectively converts the list to a single Boolean value. A very concise way to convert a list to boolean is using the or operator, exploiting the fact that in a boolean context, lists evaluate to their truthiness. Here’s an example: Output:
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Append Boolean to List in Python (4 Examples) - Statistics Globe
The most common way to append a boolean to a list is to use the append () method. See the implementation below. As seen above, the boolean value, True, has been appended to the end of my_list. One might also be interested in appending multiple boolean values to a list. You can implement this easily using the extend () method as follows.
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Python's list Data Type: A Deep Dive With Examples
Python’s list is a flexible, versatile, powerful, and popular built-in data type. It allows you to create variable-length and mutable sequences of objects. In a list, you can store objects of any type. You can also mix objects of different types within the same list, although list elements often share the same type.
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python - boolean expression of a list - Stack Overflow
There are several methods, the IMO cutest one being: return lst[1:]==lst[:-1] This basically checks if the list stays the same if you rotate it by one, which is true if and only if all elements are equal: A B C D E F G.
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How to apply a logical operator to all elements in a python list
Logical and across all elements in a_list: Logical or across all elements in a_list: If you feel creative, you can also do: return reduce(operator.and_, a_list, True) return reduce(operator.or_, a_list, False) keep in mind that those aren't evaluated in short circuit, whilst the built-ins are ;-) another funny way: