author | Anoop Jacob Thomas<anoop@fossee.in> |
Sat, 18 Dec 2010 12:54:49 +0530 | |
changeset 524 | b602b4dcc87d |
parent 522 | d33698326409 |
permissions | -rw-r--r-- |
522
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
1 |
Objective Questions |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
2 |
------------------- |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
3 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
4 |
.. A mininum of 8 questions here. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
5 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
6 |
1. ``loadtxt`` can read data only from a file with one column |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
7 |
only. True or False? |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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8 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
9 |
Answer: False |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
10 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
11 |
#. To read a file with multiple columns, into separate simple |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
12 |
sequences, ``loadtxt`` is given the additional argument ______? |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
13 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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14 |
Answer: ``unpack=True`` |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
15 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
16 |
#. We have a file with two columns of data separated by one of the |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
17 |
following characters. Which of them doesn't require the delimiter |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
18 |
argument to be specified, when using ``loadtxt``. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
19 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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20 |
a. ; |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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21 |
#. , |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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22 |
#. : |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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23 |
#. [space] |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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24 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
25 |
Answer: [space] |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
26 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
27 |
#. Given a file ``data.txt`` with three columns of data separated by |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
28 |
spaces, read it into one complex sequence. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
29 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
30 |
Answer: ``x = loadtxt("data.txt")`` |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
31 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
32 |
#. Given a file ``data.txt`` with three columns of data separated by |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
33 |
spaces, read it into 3 separate simple sequences. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
34 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
35 |
Answer: ``x = loadtxt("data.txt", unpack=True)`` |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
36 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
37 |
#. Given a file ``data.txt`` with three columns of data separated by |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
38 |
``:``, read it into one complex sequence. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
39 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
40 |
Answer: ``x = loadtxt("data.txt", delimiter=":")`` |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
41 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
42 |
#. Given a file ``data.txt`` with three columns of data separated by |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
43 |
":", read it into 3 separate simple sequences. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
44 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
45 |
Answer: ``x = loadtxt("data.txt", unpack=True, delimiter=":")`` |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
46 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
47 |
#. To use the loadtxt command, each row should have the same number of |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
48 |
values, T or F ? |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
49 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
50 |
Answer: True |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
51 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
52 |
Larger Questions |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
53 |
---------------- |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
54 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
55 |
.. A minimum of 2 questions here. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
56 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
57 |
1. What will happen if one of the cells is empty? |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
58 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
59 |
#. Given a file with 3 columns of data but two different delimiters, |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
60 |
what do you think will happen? |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
61 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
62 |
#. Read a column with text? |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
63 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
64 |
#. An input file contains 5 columns of data. Use only the second and fourth |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
65 |
columns of data and load into two different variables. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
66 |
[hint: read the documentation, use the argument ``usecols``] |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
67 |
.. #[bhanu: solutions are not seen to have been included.] |