2. Part 1 of 2- Select the correct Boolean value of the variable result in the following code.
d = dict(A = 'a', B = 'b') result = 'a' in d
A. True
B. False
2. Part 2 of 2- Identify the syntax to declare an empty
dictionary in Python.
A. d = dict("empty")
B. d = []
C. d = {}
D. d = [:]
2. Part 1 of 2- Select the correct Boolean value of the variable result in the...
QUESTION 2 Boolean or "truth-valued" expressions are how we express conditions that control choices and repetition in computer languages. Consider the following Python Boolean expression, where variables alpha, beta, and gamma are of type Boolean: alpha and (beta or gamma) In any algebraic notation there are usually several different ways of writing the same expression. For instance, in integer arithmetic the value of expression '4 x (5 + 2)' is numerically equivalent to that of expression '(4 x 5) +...
1) Which of the following is NOT true about a Python
variable?
a) A Python variable must have a value
b) A Python variable can be deleted
c) The lifetime of a Python variable is the whole duration of a
program execution.
d) A Python variable can have the value
None.
2) Given the code segment:
What is the result of executing the code segment?
a) Syntax error
b) Runtime error
c) No error
d) Logic error
3) What...
C++ 1)Define a boolean variable and initialize it to true. 2) On the next line, display the value of the boolean variable. Example: The value of true is x 3) Set the above boolean value to false. 4) On the next line, display the value of the boolean variable. Example: The value of false is x
class Bool(Expr): """A boolean constant literal. === Attributes === b: the value of the constant """ b: bool def __init__(self, b: bool) -> None: """Initialize a new boolean constant.""" self.b = b # TODO: implement this method! def evaluate(self) -> Any: """Return the *value* of this expression. The returned value should the result of how this expression would be evaluated by the Python interpreter. >>> expr = Bool(True) >>> expr.evaluate() True """ return self.b def __str__(self) -> str: """Return a...
JAVA 5) What is the output of the following code? int a = 70; boolean b = false; if(a >= 70) { System.out.print(1); if(b==true) { System.out.print(2); } } else { System.out.print(3); if(b==false) { System.out.print(4); } } System.out.print(5); 6) What is the output of the code above using these initial values? int a = 43; boolean b = false; 7) The following method is SYNTACTICALLY correct (meaning it will compile). True or false? public boolean method() { int value = 5;...
JAVA programming The task of parsing a file for correctness is an essential part of any programmer toolkit. The check for a balanced set of brackets in a file a Stack can be used and the following algorithm: • The source file is read character by character • Each time an opening '{' is read it is pushed onto the stack • Each time a closing '}' is read the stack is popped • If the stack is empty when...
Which of the statements about dictionary Values is false? a. Values of a dictionary must be unique b. Values of a dictionary can be a mixture of letters and numbers c. More than one Key can have the same value d. The value of the dictionary d for Key k can be accessed as d[k] Consider the following Python statement y = " this is quiz number 4".split() What is the data type of the variable y ? a. list...
In this lab we are building a handful of functions to perform Boolean operations. These operations are performed upon Boolean variables. A Boolean variable is either true or false. Boolean operations return Boolean values. There are only two Boolean values, either true or false. Sometimes true is defined as 1 and false is defined as 0. Build functions in C, C++, Java or Python to support the following five Boolean operations: Logical implication Logical equality Exclusive disjunction Logical NAND Logical...
Not yet answered Marked out of 1.00 Flag question Question text What is the value of the following Python expression? not(True and False) Select one: True False Question 2 Not yet answered Marked out of 1.00 Flag question Question text Consider the following Python program. fin = open('words.txt') for line in fin: word = line.strip() print(word) What does the program loop over? Select one: a. Lines in a file b. Lines in a list c. Words in a dictionary d....
The first part is “addBook method” the Second part is “checkOut method” the third part is “isAvailable method” and the fourth is “__str__ method”. What you have to do is complete the sample code provided below. do not change the sample code and print result. The program's goal is to keep track of books in a library. Books are stored in dictionaries, with the book title as the key. Source Code is: class Library: bookCount = 0 def __init__(self): self.cardCatalog...