Certified Associate in Python Programming v1.0
Question 1
Is it possible to safely check if a class/object has a certain attribute?
- A. yes, by using the hasattr attribute
- B. yes, by using the hasattr ( ) method
- C. yes, by using the hassattr ( ) function
- D. no, it is not possible
Answer : B
Reference:
https://stackoverflow.com/questions/610883/how-to-know-if-an-object-has-an-attribute-in-python
Question 2
The first parameter of each method:
- A. holds a reference to the currently processed object
- B. is always set to None
- C. is set to a unique random value
- D. is set by the first argument's value
Answer : D
Reference:
https://pythontips.com/2013/08/07/the-self-variable-in-python-explained/
Question 3
The simplest possible class definition in Python can be expressed as:
- A. class X:
- B. class X: pass
- C. class X: return
- D. class X: { }
Answer : A
Reference:
https://docs.python.org/3/tutorial/classes.html
Question 4
If you want to access an exception objectג€™s components and store them in an object called e, you have to use the following form of exception statement:
- A. except Exception (e) :
- B. except e= Exception :
- C. except Exception as e:
- D. such an action is not possible in Python
Answer : C
Reference:
https://stackoverflow.com/questions/32613375/python-2-7-exception-handling-syntax
Question 5
A variable stored separately in every object is called:
- A. there are no such variables, all variables are shared among objects
- B. a class variable
- C. an object variable
- D. an instance variable
Answer : D
Question 6
There is a stream named s open for writing. What option will you select to write a line to the stream?
- A. s. write (ג€Hello\nג€)
- B. write (s, ג€Helloג€)
- C. s.writeln (ג€Helloג€)
- D. s. writeline (ג€Helloג€)
Answer : A
Reference:
https://en.wikibooks.org/wiki/Python_Programming/Input_and_Output
Question 7
You are going to read just one character from a stream called s. Which statement would you use?
- A. ch = read (s, 1)
- B. ch= s.input (1)
- C. ch= input (s, 1)
- D. ch= s.read (1)
Answer : D
Reference:
https://stackoverflow.com/questions/510357/python-read-a-single-character-from-the-user
Question 8
What can you deduce from the following statement? (Choose two.)
- A. str is a string read in from the file named file.txt
- B. a newline character translation will be performed during the reads
- C. if file. txt does not exist, it will be created
- D. the opened file cannot be written with the use of the str variable
Answer : AD
Question 9
The following class hierarchy is given. What is the expected out of the code?
- A. BB
- B. CC
- C. AA
- D. BC
Answer : D
Question 10
Pythonג€™s built in function named open () tries to open a file and returns:
- A. an integer value identifying an opened file
- B. an error code (0 means success)
- C. a stream object
- D. always None
Answer : C
Question 11
Which of the following words can be used as a variable name? (Choose two.)
- A. for
- B. True
- C. true
- D. For
Answer : CD
Reference:
https://www.pluralsight.com/guides/python-basics-variables-assignment
Question 12
Python strings can be ג€gluedג€ together using the operator:
- A. .
- B. &
- C. _
- D. +
Answer : D
Reference:
https://docs.python.org/3/tutorial/introduction.html
Question 13
A keyword (Choose two.)
- A. can be used as an identifier
- B. is defined by Pythonג€™s lexis
- C. is also known as a reserved word
- D. cannot be used in the userג€™s code
Answer : BC
Reference:
https://www.programiz.com/python-programming/keywords-identifier
Question 14
How many stars (*) does the snippet print?
- A. the code is erroneous
- B. five
- C. four
- D. two
Answer : A
Question 15
Which line can be used instead of the comment to cause the snippet to produce the following expected output? (Choose two.)
Expected output:
1 2 3
Code:
- A. c, b, a = b, a, c
- B. c, b, a = a, c, b
- C. a, b, c = c, a, b
- D. a, b, c = a, b, c
Answer : AC