Interpreter and Program Basics: 10 practice questions

Question 1 of 10

What does the interpreter do when it is invoked with a Python file name?

1. AIt stores the file name as an empty string.
2. BIt treats every file line as a shell command.
3. CIt enters interactive mode without reading the file.
4. DIt reads and executes a script from that file.

Question 2 of 10

How does Python expose a script name and its subsequent arguments to a program?

1. AAs strings in the list `sys.path`.
2. BAs strings in the list `sys.argv`.
3. CAs variables created in the program's global scope.
4. DAs numbers in the tuple `sys.argv`.

Question 3 of 10

Which encoding does Python use for a source file when the file has no encoding declaration?

1. AWindows-1252
2. BASCII
3. CUTF-16
4. DUTF-8

Question 4 of 10

Which invocation locates a module and executes its source as a script?

1. A`python -c module [arg] ...`
2. B`python -m module [arg] ...`
3. C`python module -m [arg] ...`
4. D`python -i module [arg] ...`

Question 5 of 10

A command is run with `python -c command alpha beta`. What happens to `alpha` and `beta`?

1. AThey remain in `sys.argv` for the command to handle.
2. BThey are converted to numbers before the command runs.
3. CThey replace `sys.argv[0]` with an empty string.
4. DThey are consumed as additional interpreter options.

Question 6 of 10

What prompt normally indicates that the interactive interpreter expects a continuation line?

1. A`%%%`
2. B`...`
3. C`---`
4. D`>>>`

Question 7 of 10

Where should a non-default source encoding declaration appear when a Unix shebang is the first line?

1. AOn the second line, immediately after the shebang.
2. BInside the first string literal in the file.
3. COn the final line, after all Python statements.
4. DOn the first line, replacing the shebang.

Question 8 of 10

A developer must execute `inspect.py` from disk and then immediately explore the resulting state at a prompt. Which invocation feature satisfies both constraints?

1. APlace `-m` after the script name.
2. BPlace `-i` before the script name.
3. CPlace `-c` before the script name.
4. DPass `-` as the script name.

Question 9 of 10

A package module is started with `python -m tools.report weekly --quiet`. The module must identify its invocation form and receive both trailing values. Which `sys.argv` description is correct?

1. AElement zero is empty, and only `weekly` remains available to the module.
2. BElement zero is the module's file text, and both trailing values become numbers.
3. CElement zero is `-m`, and both trailing values are consumed as interpreter options.
4. DElement zero is the located module's full name, and both trailing values remain available.

Question 10 of 10

At the base interpreter prompt, pressing Left arrow prints a visible escape sequence. The session must continue, and the developer needs to correct the current line. What conclusion follows from the documented behavior?

1. AInteractive mode is unavailable, so the interpreter must be restarted with `-i`.
2. BThe source encoding is wrong, so a UTF-8 declaration must be added at the prompt.
3. CContinuation mode is active, so a blank line will enable the arrow keys.
4. DCommand-line editing is unavailable, so only Backspace can remove current-line characters.