Python Institute PCEP-30-02 Online Practice Questions and Exam Preparation

Python Institute PCEP-30-02 Online Questions & Answers

• Question 291:

  What is the expected output of the following code if the user enters 2 and 4?

  

  A. 6
  B. 2
  C. 4
  D. 24
  A. 6

• Question 292:

  How many stars will the following snippet send to the console?

  

  A. three
  B. two
  C. one
  B. two

• Question 293:

  What is the expected output of the following code?

  

  A. The code is erroneous.
  B. ['Peter', 'Jane', 'Mary']
  C. ['Peter', 'Jane']
  D. ['Paul', 'Mary', 'Jane']
  A. The code is erroneous.

• Question 294:

  What is the expected output of the following code?

  

  A. None
  B. 2
  C. The code is erroneous.
  D. 4
  C. The code is erroneous.

• Question 295:

  What will be the output of the following code snippet?

  

  A. 1
  B. 4
  C. 2
  D. 3
  E. None
  B. 4

• Question 296:

  What is CPython?

  A. The default implementation of the Python programming language
  B. Another name for CPython, a superset of the Python programming language
  C. A compiled language used to perform high-level programming functions
  A. The default implementation of the Python programming language

• Question 297:

  DRAG DROP

  Arrange the binary numeric operators in the order which reflects their priorities, where the top-most position has the highest priority and the bottom-most position has the lowest priority.

  Select and Place:

  

  

  ---

  Explanation/Reference:

  The correct order of the binary numeric operators in Python according to their priorities is:

  Exponentiation (**)

  Multiplication (*) and Division (/, //, %)

  Addition (+) and Subtraction (-)

  This order follows the standard mathematical convention of operator precedence, which can be remembered by the acronym PEMDAS (Parentheses, Exponents, Multiplication/Division, Addition/Subtraction). Operators with higher precedence are evaluated before those with lower precedence, but operators with the same precedence are evaluated from left to right. Parentheses can be used to change the order of evaluation by grouping expressions.

  For example, in the expression 2 + 3 * 4 ** 2, the exponentiation operator (**) has the highest priority, so it is evaluated first, resulting in 2 + 3 * 16. Then, the multiplication operator (*) has the next highest priority, so it is evaluated next, resulting in 2 + 48. Finally, the addition operator (+) has the lowest priority, so it is evaluated last, resulting in 50.

  You can find more information about the operator precedence in Python in the following references:

  6. Expressions — Python 3.11.5 documentation Precedence and Associativity of Operators in Python - Programiz Python Operator Priority or Precedence Examples Tutorial

• Question 298:

  What is the output of the following snippet?

  

  A. [1, 2, 3]
  B. [3, 3, 3]
  C. [3, 2, 1]
  D. [1, 1, 1]
  C. [3, 2, 1]

• Question 299:

  Which of the following functions can be invoked with two arguments?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  B. Option B

  ---

  Explanation/Reference:

  The code snippets that you have sent are defining four different functions in Python. A function is a block of code that performs a specific task and can be reused in the program. A function can take zero or more arguments, which are values

  that are passed to the function when it is called. A function can also return a value or None, which is the default return value in Python.

  To define a function in Python, you use the def keyword, followed by the name of the function and parentheses. Inside the parentheses, you can specify the names of the parameters that the function will accept. After the parentheses, you use

  a colon and then indent the code block that contains the statements of the function. For example:

  def function_name(parameter1, parameter2): # statements of the function return value To call a function in Python, you use the name of the function followed by parentheses. Inside the parentheses, you can pass the values for the arguments

  that the function expects. The number and order of the arguments must match the number and order of the parameters in the function definition, unless you use keyword arguments or default values.

  For example:

  function_name(argument1, argument2)

  The code snippets that you have sent are as follows:

  A) def my_function(): print("Hello")

  B) def my_function(a, b): return a + b

  C) def my_function(a, b, c): return a * b * c

  D) def my_function(a, b=0): return a - b

  The question is asking which of these functions can be invoked with two arguments. This means that the function must have two parameters in its definition, or one parameter with a default value and one without. The default value is a value

  that is assigned to a parameter if no argument is given for it when the function is called. For example, in option D, the parameter b has a default value of 0, so the function can be called with one or two arguments.

  The only option that meets this criterion is option B. The function in option B has two parameters, a and b, and returns the sum of them. This function can be invoked with two arguments, such as my_function(2, 3), which will return 5. The

  other options cannot be invoked with two arguments. Option A has no parameters, so it can only be called with no arguments, such as my_function(), which will print "Hello". Option C has three parameters, a, b, and c, and returns the product

  of them. This function can only be called with three arguments, such as my_function(2, 3, 4), which will return 24. Option D has one parameter with a default value, b, and one without, a, and returns the difference of them. This function can be

  called with one or two arguments, such as my_function(2) or my_function(2, 3), which will return 2 or -1, respectively.

  Therefore, the correct answer is B. Option B.

• Question 300:

  You execute the following command in the terminal.

  python index.py Hello

  You want the command to print out Hello.

  What has to be inside of index.py?

  

  A. Option A
  B. Option B
  C. Option C
  D. Option D
  A. Option A