diff options
Diffstat (limited to 'slides/basic_python/tuples_dicts_sets.tex')
| -rw-r--r-- | slides/basic_python/tuples_dicts_sets.tex | 78 |
1 files changed, 39 insertions, 39 deletions
diff --git a/slides/basic_python/tuples_dicts_sets.tex b/slides/basic_python/tuples_dicts_sets.tex index b09fd99..832a36c 100644 --- a/slides/basic_python/tuples_dicts_sets.tex +++ b/slides/basic_python/tuples_dicts_sets.tex @@ -3,15 +3,15 @@ \begin{frame}[fragile] \frametitle{Tuples -- Initialization} \begin{lstlisting} - In[]: t = (1, 2.5, "hello", -4, "world", 1.24, 5) - In[]: t + In[]: t = (1, 2.5, "hello", -4, "world", 1.24, 5) + In[]: t \end{lstlisting} \begin{itemize} \item It is not always necessary to use parenthesis \end{itemize} \begin{lstlisting} - In[]: a = 1, 2, 3 - In[]: b = 1, + In[]: a = 1, 2, 3 + In[]: b = 1, \end{lstlisting} \end{frame} @@ -30,26 +30,26 @@ \begin{frame}[fragile] \frametitle{Swapping values} \begin{lstlisting} - In[]: a = 5 - In[]: b = 7 + In[]: a = 5 + In[]: b = 7 - In[]: temp = a - In[]: a = b - In[]: b = temp + In[]: temp = a + In[]: a = b + In[]: b = temp \end{lstlisting} \begin{itemize} \item Here's the Pythonic way of doing it \end{itemize} \begin{lstlisting} - In[]: a, b = b, a + In[]: a, b = b, a \end{lstlisting} \begin{itemize} \item The variables can be of different data-types \end{itemize} \begin{lstlisting} - In[]: a = 2.5 - In[]: b = "hello" - In[]: a, b = b, a + In[]: a = 2.5 + In[]: b = "hello" + In[]: a, b = b, a \end{lstlisting} \end{frame} @@ -64,7 +64,7 @@ \item Tuple packing and unpacking, when swapping \end{itemize} \begin{lstlisting} - In[]: a, b = b, a + In[]: a, b = b, a \end{lstlisting} \end{frame} @@ -73,14 +73,14 @@ \begin{frame}[fragile] \frametitle{Creating Dictionaries} \begin{lstlisting} - In[]: mt_dict = {} + In[]: mt_dict = {} - In[]: extensions = {'jpg' : 'JPEG Image', + In[]: extensions = {'jpg' : 'JPEG Image', 'py' : 'Python script', 'html' : 'Html document', 'pdf' : 'Portable Document Format'} - In[]: extensions + In[]: extensions \end{lstlisting} \begin{itemize} \item Key-Value pairs @@ -91,13 +91,13 @@ \begin{frame}[fragile] \frametitle{Accessing Elements} \begin{lstlisting} - In[]: print extensions['jpg'] + In[]: print extensions['jpg'] \end{lstlisting} \begin{itemize} \item Values can be accessed using keys \end{itemize} \begin{lstlisting} - In[]: print extensions['zip'] + In[]: print extensions['zip'] \end{lstlisting} \begin{itemize} \item Values of non-existent keys cannot, obviously, be accessed @@ -163,9 +163,9 @@ \begin{frame}[fragile] \frametitle{Creating Sets} \begin{lstlisting} - In[]: a_list = [1, 2, 1, 4, 5, 6, 2] - In[]: a = set(a_list) - In[]: a + In[]: a_list = [1, 2, 1, 4, 5, 6, 2] + In[]: a = set(a_list) + In[]: a \end{lstlisting} \begin{itemize} \item Conceptually identical to the sets in mathematics @@ -177,8 +177,8 @@ \begin{frame}[fragile] \frametitle{Operations on Sets} \begin{lstlisting} - In[]: f10 = set([1, 2, 3, 5, 8]) - In[]: p10 = set([2, 3, 5, 7]) + In[]: f10 = set([1, 2, 3, 5, 8]) + In[]: p10 = set([2, 3, 5, 7]) \end{lstlisting} \begin{itemize} \item Mathematical operations performed on sets, can be performed @@ -186,19 +186,19 @@ \begin{itemize} \item Union \begin{lstlisting} - In[]: f10 | p10 + In[]: f10 | p10 \end{lstlisting} \item Intersection \begin{lstlisting} - In[]: f10 & p10 + In[]: f10 & p10 \end{lstlisting} \item Difference \begin{lstlisting} - In[]: f10 - p10 + In[]: f10 - p10 \end{lstlisting} \item Symmetric Difference \begin{lstlisting} - In[]: f10 ^ p10 + In[]: f10 ^ p10 \end{lstlisting} \end{itemize} \end{frame} @@ -208,12 +208,12 @@ \begin{itemize} \item Proper Subset \begin{lstlisting} - In[]: b = set([1, 2]) - In[]: b < f10 + In[]: b = set([1, 2]) + In[]: b < f10 \end{lstlisting} \item Subsets \begin{lstlisting} - In[]: f10 <= f10 + In[]: f10 <= f10 \end{lstlisting} \end{itemize} \end{frame} @@ -223,18 +223,18 @@ \begin{itemize} \item Containership \begin{lstlisting} - In[]: 1 in f10 - In[]: 4 in f10 + In[]: 1 in f10 + In[]: 4 in f10 \end{lstlisting} \item Iterating over elements \begin{lstlisting} - In[]: for i in f10: + In[]: for i in f10: ....: print i, ....: \end{lstlisting} \item Subsets \begin{lstlisting} - In[]: f10 <= f10 + In[]: f10 <= f10 \end{lstlisting} \end{itemize} \end{frame} @@ -246,13 +246,13 @@ all the duplicates \end{block} \begin{lstlisting} - In[]: marks = [20, 23, 22, 23, 20, 21, 23] - In[]: marks_set = set(marks) - In[]: for mark in marks_set: + In[]: marks = [20, 23, 22, 23, 20, 21, 23] + In[]: marks_set = set(marks) + In[]: for mark in marks_set: ....: marks.remove(mark) # left with only duplicates - In[]: duplicates = set(marks) + In[]: duplicates = set(marks) \end{lstlisting} \end{frame} |