61 \begin{frame}[fragile]

    62 \frametitle{\incqno }

    63 Draw (roughly) the plot obtained by the following:

    64 \begin{lstlisting}

    65 In []: x = linspace(0, 2*pi, 3)

    66 In []: plot(x, sin(x))

    67 \end{lstlisting}

    68 \end{frame}

    69 

    70 %% \begin{frame}[fragile]

    71 %% \frametitle{\incqno }

    72 %% Describe the plot produced by the following:

    73 %% \begin{lstlisting}

    74 %% In []: x = linspace(0, 2*pi, 50)

    75 %% In []: plot(x, cos(x), 'go')

    76 %% \end{lstlisting}

    77 %% \end{frame}

    78 

    79 \begin{frame}

    80 \frametitle{\incqno }

    81 How will you plot the previous graph with line width set to 3?  How will

    82 you set the $x$ and $y$ labels of the plot?

    83 \end{frame}

    84 

    85 \begin{frame}

    86 \frametitle{\incqno }

    87 How will you set the x and y axis limits so that the region of interest

    88 is in the rectangle $(0, -1.5)$ (left bottom coordinate) and $(2\pi,

    89 1.5)$ (right top coordinate)?

    90 \end{frame}

    91 

    92 \begin{frame}

    93 \frametitle{\incqno }

    94 What ipython magic command do you use to obtain the lines of code you have already typed in the interpreter? What command do you use to save them?

    95 \end{frame}

    96 

    97 \begin{frame}[fragile]

    98 \frametitle{\incqno }

    99 The following code snippet has an error/bug:

   100 \begin{lstlisting}

   101 In []: y = linspace(0, 2*pi, 50)

   102 In []: plot(y, sin(y))

   103 In []: clf()

   104 In []: plot(y, cos(y))

   105 In []: legend(['sin(y)', 'cos(y)']) 

   106 \end{lstlisting}

   107 What is the error? How do you fix it?  

   108 \end{frame}

   109 

   110 \begin{frame}[fragile]

   111 \frametitle{\incqno }

   112   \begin{lstlisting}

   113   In []: a = [1, 2, 5, 9]

   114   In []: a[0:-1]

   115   \end{lstlisting}

   116   What is the output?

   117 \end{frame}

   118 

   119 \begin{frame}

   120 \frametitle{\incqno }

   121   How do you combine two lists \emph{a} and \emph{b} to produce one list?

   122 \end{frame}

   123 

   124 \begin{frame}[fragile]

   125 \frametitle{\incqno }

   126   \begin{lstlisting}

   127   In []: a = [1, 2, 5, 9]

   128   \end{lstlisting}

   129   How do you add the value 10 to the end of this list?

   130 \end{frame}

   131 

   132 \begin{frame}

   133 \frametitle{\incqno }

   134 Write the code to read a file \texttt{data.txt} and print each line of it?

   135 \end{frame}

   136 

   137 \begin{frame}[fragile]

   138 \frametitle{\incqno }

   139 What would be the result of the following code snippet:

   140 \begin{lstlisting}

   141 In []: x = linspace(0, 10, 50)

   142 In []: y = linspace(50, 100, 100)

   143 In []: plot(x, y)

   144 \end{lstlisting}

   145 \end{frame}

   146 

   147 \begin{frame}[fragile]

   148 \frametitle{\incqno }

   149 The following code snippet has an error/bug:

   150 \begin{lstlisting}

   151 In []: l = [0.1, 0.2, 0.3, 0.4]

   152 In []: t = [0.69, 0.90, 1.19, 1.30]

   153 In []: tsq = []

   154 In []: for time in t:

   155  ....:     tsq.append(time*time)

   156  ....:     plot(l, tsq)

   157 \end{lstlisting}

   158 What is the error? How do you fix it?

   159 \end{frame}

   160 

   161 \begin{frame}

   162 \frametitle{\incqno }

   163   A sample line from a Comma Separated Values (CSV) file:\\

   164   \vspace*{0.2in}

   165   \emph{Rossum, Guido, 42, 56, 34, 54}\\

   166   \vspace*{0.2in}

   167   What code would you use to separate the line into fields?

   168 \end{frame}

   169 

   170 \begin{frame}[fragile]

   171 \frametitle{\incqno }

   172   \begin{lstlisting}

   173   In []: a = [1, 2, 5, 9]

   174   \end{lstlisting}

   175   How do you find the length of this list?

   176 \end{frame}

   177 

   178 \begin{frame}[fragile]

   179 \frametitle{\incqno }

   180   \begin{lstlisting}

   181   In [1]: d = {

   182           'a': 1,

   183           'b': 2

   184           }

   185   In [2]: print d['c']

   186   \end{lstlisting}

   187   What is the output?

   188 \end{frame}

   189 

   190 \begin{frame}[fragile]

   191 \frametitle{\incqno }

   192 \begin{lstlisting}

   193 In []: sc = {'A': 10, 'B': 20, 

   194              'C': 70}

   195 \end{lstlisting}

   196 Given the above dictionary, what command will you give to plot a

   197 pie-chart?

   198 \end{frame}

   199 

   200 \begin{frame}[fragile]

   201 \frametitle{\incqno }

   202 \begin{lstlisting}

   203 In []: marks = [10, 20, 30, 50, 55, 

   204                 75, 83] 

   205 \end{lstlisting}

   206 Given the above marks, how will you calculate the \alert{mean} and

   207 \alert{standard deviation}?

   208 \end{frame}

   209 

   210 \begin{frame}[fragile]

   211 \frametitle{\incqno }

   212 \begin{lstlisting}

   213 In []: marks = [10, 20, 30, 50, 55, 

   214                75, 83] 

   215 \end{lstlisting}

   216 How will you convert the list \texttt{marks} to an \alert{array}?

   217 \end{frame}

   218