loading-data-from-files/questions.rst
changeset 522 d33698326409
parent 521 88a01948450d
child 523 54bdda4aefa5
--- a/loading-data-from-files/questions.rst	Wed Nov 17 23:24:57 2010 +0530
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,67 +0,0 @@
-Objective Questions
--------------------
-
-.. A mininum of 8 questions here. 
-
-1. ``loadtxt`` can read data only from a file with one column
-   only. True or False?
-
-   Answer: False
-
-#. To read a file with multiple columns, into separate simple
-   sequences, ``loadtxt`` is given the additional argument ______?
-
-   Answer: ``unpack=True``
-
-#. We have a file with two columns of data separated by one of the
-   following characters. Which of them doesn't require the delimiter
-   argument to be specified, when using ``loadtxt``. 
-
-   a. ;
-   #. , 
-   #. :
-   #. [space] 
-   
-   Answer: [space]
-   
-#. Given a file ``data.txt`` with three columns of data separated by
-   spaces, read it into one complex sequence. 
-
-   Answer: ``x = loadtxt("data.txt")``
-
-#. Given a file ``data.txt`` with three columns of data separated by
-   spaces, read it into 3 separate simple sequences. 
-
-   Answer: ``x = loadtxt("data.txt", unpack=True)``
-
-#. Given a file ``data.txt`` with three columns of data separated by
-   ``:``, read it into one complex sequence. 
-
-   Answer: ``x = loadtxt("data.txt", delimiter=":")``
-
-#. Given a file ``data.txt`` with three columns of data separated by
-   ":", read it into 3 separate simple sequences. 
-
-   Answer: ``x = loadtxt("data.txt", unpack=True, delimiter=":")``
-
-#. To use the loadtxt command, each row should have the same number of
-   values, T or F ?
-
-   Answer: True
-
-Larger Questions
-----------------
-
-.. A minimum of 2 questions here. 
-
-1. What will happen if one of the cells is empty?
-
-#. Given a file with 3 columns of data but two different delimiters,
-   what do you think will happen?
-
-#. Read a column with text? 
-
-#. An input file contains 5 columns of data. Use only the second and fourth
-   columns of data and load into two different variables.
-   [hint: read the documentation, use the argument ``usecols``]
-.. #[bhanu: solutions are not seen to have been included.]