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c. File object |
Which of these is associated with a specific file and provides a way for the program to work with that file? a. Filename b. Extension c. File object d. File variable |
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b. Reading data |
What do you call the process of retrieving data from a file? a. Retrieving data b. Reading data c. Input data d. Get data |
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a. Data is copied from a variable in RAM to a file. |
What happens when a piece of data is written to a file? a. Data is copied from a variable in RAM to a file. b. Data is copied from a variable in the program to a file. c. Data is copied from the program to a file. d. Data is copied from a file object to a file. |
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a. Open the file. |
Which step creates a connection between a file and a program? a. Open the file. b. Read the file. c. Process the file. d. Close the file. |
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b. Two (Text and Binary) |
How many types of files are there? a. One b. Two c. Three d. Four |
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b. random |
A(n) _____ access file is also known as a direct access file. a. sequential b. random c. numbered d. text |
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b. Random |
What type of file access jumps directly to any piece of data in a file without reading the data that came before it? a. Sequential b. Random c. Number d. Text |
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b. ‘r’ |
Which mode specifier will open a file but will not let you change the file or write to it? a. ‘w’ b. ‘r’ c. ‘a’ d. ‘e’ |
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a. ‘w’ |
Which mode specifier will erase the contents of a file if it already exists and create it if it does not exist? a. ‘w’ b. ‘r’ c. ‘a’ d. ‘e’ |
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d. customer.write(‘Mary Smith’) |
Assume that the customer file references a file object, and the file was opened using the ‘w’ mode specifier. How would you write the string ‘Mary Smith’ to the file? a. customer_file.write(‘Mary Smith’) b. customer.write(‘w’,’Mary Smith’) c. customer.input(‘Mary Smith’) d. customer.write(‘Mary Smith’) |
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d. read |
When a file has been opened using the ‘r’ mode specifier, which method will return the file’s contents as a string? a. write b. input c. get d. read |
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b. rstrip |
Which method could be used to strip specific characters from the end of a string? a. estrip b. rstrip c. strip d. remove |
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a. str |
Which method could be used to convert a numeric value to a string? a. str b. value c. num d. chr |
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d. readline |
Which method will return an empty string when it has attempted to read beyond the end of a file? a. Read b. Getline c. input d. readline |
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c. try/except statement |
What statement can be used to handle some of the run-time errors in a program? a. exception statement b. try statement c. try/except statement d. exception handler statement |
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False |
True/False: If a file with the specified name already exists when the file is opened, and the file is opened in ‘w’ mode, then an alert will appear on the screen. |
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False |
True/False: When a piece of data is read from a file, it is copied from the file into the program. |
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True |
True/False: Closing a file disconnects the communication between the file and the program. |
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False |
True/False: Python allows the programmer to work with text and number files. |
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False |
True/False: In Python, there is nothing that can be done if the program tries to access a file to read that does not exist. |
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True |
True/False: The ZeroDivisionError exception is raised when the program attempts to perform a division by zero. |
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True |
True/False: An exception handler is a piece of code that is written using the try/except statement. |
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True |
True/False: If the last line in a file is not terminated with a \n, the readline method will return the line without a \n. |
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True |
True/False: Strings can be written directly to a file with the write method, but numbers must be converted to strings before they can be written. |
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True |
True/False: It is possible to create a while loop that determines when the end of a file has been reached. |
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