Free Python Institute PCAP-31-03 Exam Dumps Questions & Answers

Executing the following snippet

will cause the dct:

• A.  to hold two keys named 'pi' linked to 3.14 and 3.1415 respectively
• B.  to hold two key named 'pi' linked to 3.14 and 3.1415
• C.  to hold one key named 'pi' linked to 3.1415
• D.  to hold two keys named 'pi' linked to 3.1415

What can you deduce from the following statement? (Select two answers)
str = open('file.txt', "rt")

• A.  the opened file cannot be written with the use of the str variable
• B.  if file. txt does not exist, it will be created
• C.  str is a string read in from the file named file.txt
• D.  a newlina character translation will be performed during the reads

What is the expected out of the following code of the file named zero_length_existing_file is a zero-length file located inside the working directory?

• A.  an errno value corresponding to file not found
• B.  -1
• C.  2
• D.  0

Which of the following statements are true? (Select two answers)

• A.  if invoking open () fails, an exception is raised
• B.  instd, outstd, errstd are the names of pre-opened streams
• C.  open () requires a second argument
• D.  open () is a function which returns an object that represents a physical file

What is the expected behavior of the following code?

• A.  the code is erroneus and it will not execute
• B.  it outputs [4, 2]
• C.  it outputs [2, 4]
• D.  it outputs [0, 1, 2, 3, 4]