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

Python Institute PCEP-30-02 Online Questions & Answers

• Question 101:

  DRAG DROP

  Drag and drop the conditional expressions to obtain a code which outputs * to the screen. (Note: some code boxes will not be used.)

  Select and Place:

  

  

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  Explanation/Reference:

  One possible way to drag and drop the conditional expressions to obtain a code which outputs * to the screen is:

  if pool > 0:

  print("*")

  elif pool < 0:

  print("**")

  else:

  print("***")

  This code uses the if, elif, and else keywords to create a conditional statement that checks the value of the variable pool. Depending on whether the value is greater than, less than, or equal to zero, the code will print a different pattern of

  asterisks to the screen.

  The print function is used to display the output. The code is indented to show the blocks of code that belong to each condition. The code will output * if the value of pool is positive, ** if the value of pool is negative, and *** if the value of pool is

  zero.

  You can find more information about the conditional statements and the print function in Python in the following references:

  [Python If … Else]

  [Python Print Function]

  [Python Basic Syntax]

• Question 102:

  The ** operator ...

  A. does not exist.
  B. performs oating-point multiplication.
  C. performs duplicated multiplication.
  D. performs exponentiation.
  D. performs exponentiation.

• Question 103:

  Assuming that the following assignment has been successfully executed:

  

  Which of the following expressions evaluate to True? (Select two expressions.)

  A. the_List.index {"1"} in the_list
  B. 1.1 in the_list |1:3 |
  C. len (the list [0:2]}
  D. the_list. index {'1'} -- 0
  C. len (the list [0:2]}
  D. the_list. index {'1'} -- 0

  ---

  Explanation/Reference:

  The code snippet that you have sent is assigning a list of four values to a variable called "the_list". The code is as follows:

  the_list = [`1', 1, 1, 1]

  The code creates a list object that contains the values `1', 1, 1, and 1, and assigns it to the variable "the_list". The list can be accessed by using the variable name or by using the index of the values. The index starts from 0 for the first value

  and goes up to the length of the list minus one for the last value. The index can also be negative, in which case it counts from the end of the list. For example, the_list[0] returns `1', and the_list[-1] returns 1. The expressions that you have

  given are trying to evaluate some conditions on the list and return a boolean value, either True or False. Some of them are valid, and some of them are invalid and will raise an exception. An exception is an error that occurs when the code

  cannot be executed properly. The expressions are as follows:

  A. the_List.index {"1"} in the_list: This expression is trying to check if the index of the value `1' in the list is also a value in the list. However, this expression is invalid, because it uses curly brackets instead of parentheses to call the index

  method. The index method is used to return the first occurrence of a value in a list. For example, the_list.index(`1') returns 0, because `1' is the first value in the list. However, the_list.index {"1"} will raise a SyntaxError exception and output

  nothing.

  B. 1.1 in the_list |1:3 |: This expression is trying to check if the value 1.1 is present in a sublist of the list. However, this expression is invalid, because it uses a vertical bar instead of a colon to specify the start and end index of the sublist. The

  sublist is obtained by using the slicing operation, which uses square brackets and a colon to get a part of the list. For example, the_list[1:3] returns [1, 1], which is the sublist of the list from the index 1 to the index 3, excluding the end index.

  However, the_list |1:3 | will raise a SyntaxError exception and output nothing.

  C. len (the list [0:2]} <3: This expression is trying to check if the length of a sublist of the list is less than 3. This expression is valid, because it uses the len function and the slicing operation correctly. The len function is used to return the

  number of values in a list or a sublist. For example, len(the_list) returns 4, because the list has four values. The slicing operation is used to get a part of the list by using square brackets and a colon. For example, the_list[0:2] returns [`1', 1],

  which is the sublist of the list from the index 0 to the index 2, excluding the end index. The expression len (the list [0:2]} <3 returns True, because the length of the sublist [`1', 1] is 2, which is less than 3. D. the_list. index {`1'} ?0: This

  expression is trying to check if the index of the value `1' in the list is equal to 0. This expression is valid, because it uses the index method and the equality operator correctly. The index method is used to return the first occurrence of a value in

  a list. For example, the_list.index(`1') returns 0, because `1' is the first value in the list. The equality operator is used to compare two values and return True if they are equal, or False if they are not. For example, 0 == 0 returns True, and 0 ==

  1 returns False. The expression the_list. index {`1'} ?0 returns True, because the index of `1' in the list is 0, and 0 is equal to 0.

  Therefore, the correct answers are C. len (the list [0:2]} <3 and D. the_list. index {`1'} ?0.

  Reference: Python List Methods - W3Schools5. Data Structures -- Python 3.11.5 documentationList methods in Python - GeeksforGeeks

• Question 104:

  Consider the following Python code:

  

  What are the types of the variables distance, amount and country?

  A. oat, int, str
  B. oat, str, str
  C. double, str, oat
  D. oat, oat, str
  D. oat, oat, str

• Question 105:

  The compiled Python bytecode is stored in les having names ending with:

  A. py
  B. pyb
  C. pyc
  D. pc
  C. pyc

• Question 106:

  DRAG DROP

  Insert the code boxes in the correct positions in order to build a line of code which asks the user for an integer value and assigns it to the depth variable. (Note: some code boxes will not be used.)

  Select and Place:

  

  

  ---

  Explanation/Reference:

  One possible way to insert the code boxes in the correct positions in order to build a line of code which asks the user for an integer value and assigns it to the depth variable is:

  depth = int(input("Enter the immersion depth: "))

  This line of code uses the input function to prompt the user for a string value, and then uses the int function to convert that string value into an integer number. The result is then assigned to the variable depth.

  You can find more information about the input and int functions in Python in the following references:

  [Python input() Function]

  [Python int() Function]

• Question 107:

  The part of your code where the handling of an exception takes place should be placed inside:

  A. the except: branch
  B. the exception: branch
  C. the try: branch
  A. the except: branch

• Question 108:

  What is the expected output of the following code?

  

  A. 1 | Hello 2 | Hello
  B. 1 | Hello 2 | Hello 3 | Hello
  C. 1 | Hello 2 | Hello 3 | Hello 4 | Hello
  D. An in nite loop.
  D. An in nite loop.

• Question 109:

  Which of the following code snippets will print True to the monitor? (Choose two.)

  

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

• Question 110:

  What is the expected output of the following code?

  

  A. The code is erroneous and cannot be run.
  B. ppt
  C. 213
  D. pizzapastafolpetti
  B. ppt

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  Explanation/Reference:

  The code snippet that you have sent is using the slicing operation to get parts of a string and concatenate them together. The code is as follows:

  pizza = "pizza" pasta = "pasta" folpetti = "folpetti" print(pizza[0] + pasta[0] + folpetti[0]) The code starts with assigning the strings "pizza", "pasta", and "folpetti" to the variables pizza, pasta, and folpetti respectively. Then, it uses the print

  function to display the result of concatenating the first characters of each string. The first character of a string can be accessed by using the index 0 inside square brackets. For example, pizza[0] returns "p". The concatenation operation is

  used to join two or more strings together by using the + operator. For example, "a" + "b" returns "ab". The code prints the result of pizza[0] + pasta[0] + folpetti[0], which is "p" + "p" + "f", which is "ppt". The expected output of the code is ppt,

  because the code prints the first characters of each string. Therefore, the correct answer is B. ppt.

  Reference: Python String Slicing - W3SchoolsPython String Concatenation - W3Schools