additional_ipython/questions.rst
author anand
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Checklist OK for `The other kinds of plots`
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Objective Questions
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-------------------
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 1. How do you retrieve the recent 5 commands
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    a. ``%hist``
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    #. ``%hist -5``
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    #. ``%hist 5``
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    #. ``%hist 5-10``
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    Answer: ``%hist 5``
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 2. If there were 20 commands typed and ``%hist`` is used. How many commands 
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    will be displayed.
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    a. 10
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    #. 20
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    #. 21
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    #. 19
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    Answer: 21
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.. #[Amit: I really don't get the question below]
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 3. is ``%hist`` considered as a command
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    a. True
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    #. False
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    Answer: True
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 4. how do you retreive the commands from 20 to 50 (inclusive of 20 and 50)
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    a. ``%hist 20 50``
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    #. ``%hist 19 50``
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    #. ``%hist 19 51``
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    #. ``%hist 21 50``
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    Answer: ``%hist 20 50``
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 5. What does the ``%hist 2 5 7`` command do
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    a. lists the second, fifth and seventh commands
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    #. lists the commands from 2 to 5 and the seventh command
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    #. raises an error
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    #. lists the commands 2 to 7
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    Answer: raises an error
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 6. How many commands are displayed when lot of commands were typed and 
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    ``%hist`` is used.
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.. #[Amit: Ok something wrong with the question. 
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.. Recommend : What is the default maximum number of commands %hist can show ]
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    a. 20
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    #. 10
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    #. 50
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    #. 40
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    Answer: 40
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 7. How do you save the lines 2 3 4 5 7 9 10 11
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    a. ``%save filepath 2-5 7 9-11``
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    #. ``%save filepath 2-11``
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    #. ``%save filepath``
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    #. ``%save 2-5 7 9 10 11``
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    Answer: ``%save filepath 2-5 7 9-11``
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 8. You are working in /home/user. Where is the file saved when you do
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    ``%save hello.py 1-3`` 
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    a. /home/user/hello.py
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    #. /hello.py
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    #. /home/hello.py
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    #. /home/user/ipython/hello.py
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    Answer: /home/user/hello.py
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 9. Which lines are saved by the command ``%save filepath 2-5 7 1`` and in
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    which order
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    a. 2 3 4 5 7 1
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    #. 1 2 3 4 5 6 7
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    #. 2 5 7 1
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    #. 1 2 5 7
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    Answer: a
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10. What happens when ``%save filepath line_numbers`` is used and a file
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     already exists in that path.
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    a. It is overwritten
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    #. The commands are added to the file
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    #. It raises an error
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    #. A prompt to confirm overwriting is displayed 
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    Answer: A prompt to confirm overwriting is displayed 
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 11. Read through the documentation of ``%hist`` and find its alternative name
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    Answer: ``%history``
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 12. Are ``%run /home/user/saved.py`` and ``%run /home/user/saved`` the same
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   a. Yes
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   #. No
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   Answer: Yes
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 13. The file hello.py contains only one command ``x = x + 1``. What happens
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     when you do ``%run hello.py``
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    Answer: Raises a nameerror
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  14. The file hello.py contains only one command ``x = x + 1``. If value of x
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      is 5 and what does ``%run -i hello.py`` do.
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    a. raises an error
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    #. increments value of x by 1
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    #. Does nothing
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    Answer: increments the value of x by 1
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Long Answer questions :
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-----------------------
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1. Question 1
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2. Question 2
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.. #[Amit: I think long answer questions for this script are
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.. not possible. Please add if someone comes up with any]