author | Puneeth Chaganti <punchagan@fossee.in> |
Wed, 01 Dec 2010 16:51:35 +0530 | |
changeset 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 |
#+LaTeX_CLASS: beamer |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
2 |
#+LaTeX_CLASS_OPTIONS: [presentation] |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
3 |
#+BEAMER_FRAME_LEVEL: 1 |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
4 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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5 |
#+BEAMER_HEADER_EXTRA: \usetheme{Warsaw}\usecolortheme{default}\useoutertheme{infolines}\setbeamercovered{transparent} |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
6 |
#+COLUMNS: %45ITEM %10BEAMER_env(Env) %10BEAMER_envargs(Env Args) %4BEAMER_col(Col) %8BEAMER_extra(Extra) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
7 |
#+PROPERTY: BEAMER_col_ALL 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 :ETC |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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8 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
9 |
#+LaTeX_CLASS: beamer |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
10 |
#+LaTeX_CLASS_OPTIONS: [presentation] |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
11 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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12 |
#+LaTeX_HEADER: \usepackage[english]{babel} \usepackage{ae,aecompl} |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
13 |
#+LaTeX_HEADER: \usepackage{mathpazo,courier,euler} \usepackage[scaled=.95]{helvet} |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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14 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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15 |
#+LaTeX_HEADER: \usepackage{listings} |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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16 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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17 |
#+LaTeX_HEADER:\lstset{language=Python, basicstyle=\ttfamily\bfseries, |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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18 |
#+LaTeX_HEADER: commentstyle=\color{red}\itshape, stringstyle=\color{red}, |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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19 |
#+LaTeX_HEADER: showstringspaces=false, keywordstyle=\color{blue}\bfseries} |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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20 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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21 |
#+TITLE: Testing and debugging |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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22 |
#+AUTHOR: FOSSEE |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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23 |
#+EMAIL: |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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24 |
#+DATE: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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25 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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26 |
#+DESCRIPTION: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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27 |
#+KEYWORDS: |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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28 |
#+LANGUAGE: en |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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29 |
#+OPTIONS: H:3 num:nil toc:nil \n:nil @:t ::t |:t ^:t -:t f:t *:t <:t |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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30 |
#+OPTIONS: TeX:t LaTeX:nil skip:nil d:nil todo:nil pri:nil tags:not-in-toc |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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31 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
32 |
* Outline |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
33 |
- What software Testing is? |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
34 |
- Learn to test simple functions for their functionality. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
35 |
- Learn how to automate tests. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
36 |
- Need for coding style and some of the standards followed by the Python Community. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
37 |
- Handling Errors and Exceptions. |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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38 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
39 |
* gcd function |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
40 |
- Create gcd.py file with: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
41 |
#+begin_src python |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
42 |
def gcd(a, b): |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
43 |
if a % b == 0: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
44 |
return b |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
45 |
return gcd(b, a%b) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
46 |
#+end_src python |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
47 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
48 |
* Test for gcd.py |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
49 |
- Edit gcd.py file |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
50 |
#+begin_src python |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
51 |
def gcd(a, b): |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
52 |
if b == 0: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
53 |
return a |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
54 |
return gcd(b, a%b) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
55 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
56 |
if __name__=='__main__': |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
57 |
result = gcd(48, 64) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
58 |
if result != 16: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
59 |
print "Test failed" |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
60 |
print "Test Passed" |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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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 |
#+end_src |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
63 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
64 |
* Automating tests |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
65 |
#+begin_src python |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
66 |
if __name=__='__main__': |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
67 |
for line in open('numbers.txt'): |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
68 |
numbers = line.split() |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
69 |
x = int(numbers[0]) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
70 |
y = int(numbers[1]) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
71 |
result = int(numbers[2]) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
72 |
if gcd(x, y) != result: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
73 |
print "Failed gcd test |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
74 |
for", x, y |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
75 |
#+end_src |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
76 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
77 |
* Question 1 |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
78 |
For the same inputs as gcd write automated tests for LCM. |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
79 |
* Solution 1 |
d33698326409
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Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
80 |
#+begin_src python |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
81 |
def gcd(a, b): |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
82 |
if a % b == 0: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
83 |
return b |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
84 |
return gcd(b, a%b) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
85 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
86 |
def lcm(a, b): |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
87 |
return (a * b) / gcd(a, b) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
88 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
89 |
if __name__ == '__main__': |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
90 |
for line in open('lcmtestcases.txt'): |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
91 |
numbers = line.split() |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
92 |
x = int(numbers[0]) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
93 |
y = int(numbers[1]) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
94 |
result = int(numbers[2]) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
95 |
if lcm(x, y) != result: |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
96 |
print "Failed lcm test for", x, y |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
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|
97 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
98 |
#+end_src |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
99 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
100 |
* Meaning full names |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
101 |
#+begin_src python |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
102 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
103 |
amount = 12.68 |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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changeset
|
104 |
denom = 0.05 |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
105 |
nCoins = round(amount / denom) |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
106 |
rAmount = nCoins * denom |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
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|
107 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
108 |
#+end_src |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
109 |
|
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
110 |
* Code style |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
111 |
- Four Space Indentation |
d33698326409
Renamed all LOs to match with their names in progress.org.
Puneeth Chaganti <punchagan@fossee.in>
parents:
diff
changeset
|
112 |
- 79 character limit on a line |
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- Funtions should be seperated by |
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blank line |
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- Use Docstring |
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- White space around operators |
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- l = 32 % 4 |
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* Question 2 |
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- Give meaningful names to the variables in following |
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code |
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- c = a / b |
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125 |
* Solution 2 |
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#+begin_src python |
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quotient = dividend / divisor |
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|
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#+end_src |
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|
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* Code Snippet |
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133 |
#+begin_src python |
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|
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while True print 'Hello world' |
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|
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137 |
#+end_src |
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|
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139 |
* Error |
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140 |
#+begin_latex |
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\begin{lstlisting} |
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142 |
while True print 'Hello world' |
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143 |
\end{lstlisting} |
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144 |
\begin{lstlisting} |
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File "<stdin>", line 1, in ? |
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146 |
while True print 'Hello world' |
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SyntaxError: invalid syntax |
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148 |
\end{lstlisting} |
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149 |
#+end_latex |
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150 |
|
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151 |
* Code Snippet |
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152 |
#+begin_src python |
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153 |
a = raw_input("Enter a number") |
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154 |
try: |
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155 |
num = int(a) |
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156 |
except: |
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157 |
print "Wrong input ..." |
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158 |
|
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159 |
#+end_src |
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160 |
|
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161 |
* Using idb |
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162 |
#+begin_latex |
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163 |
\small |
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164 |
\begin{lstlisting} |
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165 |
In []: import mymodule |
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166 |
In []: mymodule.test() |
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167 |
--------------------------------------------- |
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168 |
NameError Traceback (most recent call last) |
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169 |
<ipython console> in <module>() |
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mymodule.py in test() |
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171 |
1 def test(): |
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172 |
2 total=1+1 |
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173 |
----> 3 print spam |
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174 |
NameError: global name 'spam' is not defined |
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175 |
|
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176 |
In []: %debug |
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177 |
> mymodule.py(2)test() |
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178 |
0 print spam |
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179 |
ipdb> total |
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180 |
2 |
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181 |
\end{lstlisting} |
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|
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183 |
#+end_latex |
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184 |
|
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185 |
|
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186 |
|
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187 |
* Summary |
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188 |
- Create simple tests for a function. |
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189 |
- Learn to Automate tests using many predefined test cases. |
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190 |
- Good coding standards. |
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191 |
- Difference between syntax error and exception. |
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192 |
- Handling exception using try and except. |
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193 |
- Using %debug for debugging on ipython. |
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194 |
|
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195 |
* Thank you! |
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196 |
#+begin_latex |
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197 |
\begin{block}{} |
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198 |
\begin{center} |
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199 |
This spoken tutorial has been produced by the |
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200 |
\textcolor{blue}{FOSSEE} team, which is funded by the |
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201 |
\end{center} |
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202 |
\begin{center} |
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203 |
\textcolor{blue}{National Mission on Education through \\ |
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204 |
Information \& Communication Technology \\ |
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205 |
MHRD, Govt. of India}. |
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206 |
\end{center} |
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207 |
\end{block} |
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208 |
#+end_latex |
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209 |