equal
deleted
inserted
replaced
145 In []: G = [] |
145 In []: G = [] |
146 In []: for line in open('pendulum.txt'): |
146 In []: for line in open('pendulum.txt'): |
147 .... point = line.split() |
147 .... point = line.split() |
148 .... l = float(point[0]) |
148 .... l = float(point[0]) |
149 .... t = float(point[1]) |
149 .... t = float(point[1]) |
150 .... g = 4 * pi * pi * l / t * t |
150 .... g = 4 * pi * pi * l / (t * t) |
151 .... G.append(g) |
151 .... G.append(g) |
152 \end{lstlisting} |
152 \end{lstlisting} |
153 \end{frame} |
153 \end{frame} |
154 |
154 |
155 \begin{frame} |
155 \begin{frame} |
164 \begin{lstlisting} |
164 \begin{lstlisting} |
165 total = 0 |
165 total = 0 |
166 for g in G: |
166 for g in G: |
167 total += g |
167 total += g |
168 |
168 |
169 g_mean = total / len(g) |
169 g_mean = total / len(G) |
170 print "Mean: ", g_mean |
170 print 'Mean: ', g_mean |
171 \end{lstlisting} |
171 \end{lstlisting} |
172 \end{frame} |
172 \end{frame} |
173 |
173 |
174 \begin{frame}[fragile] |
174 \begin{frame}[fragile] |
175 \frametitle{Mean ``g''} |
175 \frametitle{Mean ``g''} |
176 \begin{lstlisting} |
176 \begin{lstlisting} |
177 g_mean = sum(G) / len(G) |
177 g_mean = sum(G) / len(G) |
178 print "Mean: ", g_mean |
178 print 'Mean: ', g_mean |
179 \end{lstlisting} |
179 \end{lstlisting} |
180 \end{frame} |
180 \end{frame} |
181 |
181 |
182 \begin{frame}[fragile] |
182 \begin{frame}[fragile] |
183 \frametitle{Mean ``g''} |
183 \frametitle{Mean ``g''} |
184 \begin{lstlisting} |
184 \begin{lstlisting} |
185 g_mean = mean(G) |
185 g_mean = mean(G) |
186 print "Mean: ", g_mean |
186 print 'Mean: ', g_mean |
187 \end{lstlisting} |
187 \end{lstlisting} |
188 \inctime{10} |
188 \inctime{10} |
189 \end{frame} |
189 \end{frame} |
190 |
190 |
191 \section{Processing voluminous data} |
191 \section{Processing voluminous data} |
275 \end{frame} |
275 \end{frame} |
276 |
276 |
277 \begin{frame}[fragile] |
277 \begin{frame}[fragile] |
278 \frametitle{Dictionaries \ldots} |
278 \frametitle{Dictionaries \ldots} |
279 \begin{lstlisting} |
279 \begin{lstlisting} |
280 In []: d = {"jpg" : "image file", |
280 In []: d = {'jpg' : 'image file', |
281 "txt" : "text file", |
281 'txt' : 'text file', |
282 "py" : "python code"} |
282 'py' : 'python code'} |
283 |
283 |
284 In []: d["txt"] |
284 In []: d['txt'] |
285 Out[]: 'text file' |
285 Out[]: 'text file' |
286 \end{lstlisting} |
286 \end{lstlisting} |
287 \end{frame} |
287 \end{frame} |
288 |
288 |
289 \begin{frame}[fragile] |
289 \begin{frame}[fragile] |
290 \frametitle{Dictionaries \ldots} |
290 \frametitle{Dictionaries \ldots} |
291 \begin{lstlisting} |
291 \begin{lstlisting} |
292 In []: "py" in d |
292 In []: 'py' in d |
293 Out[]: True |
293 Out[]: True |
294 |
294 |
295 In []: "cpp" in d |
295 In []: 'cpp' in d |
296 Out[]: False |
296 Out[]: False |
297 \end{lstlisting} |
297 \end{lstlisting} |
298 \end{frame} |
298 \end{frame} |
299 |
299 |
300 \begin{frame}[fragile] |
300 \begin{frame}[fragile] |
415 \end{frame} |
415 \end{frame} |
416 |
416 |
417 \begin{frame}[fragile] |
417 \begin{frame}[fragile] |
418 \frametitle{Obtaining statistics} |
418 \frametitle{Obtaining statistics} |
419 \begin{lstlisting} |
419 \begin{lstlisting} |
420 print "Mean: ", mean(math_scores) |
420 print 'Mean: ', mean(math_scores) |
421 |
421 |
422 print "Median: ", median(math_scores) |
422 print 'Median: ', median(math_scores) |
423 |
423 |
424 print "Standard Deviation: ", |
424 print 'Standard Deviation: ', |
425 std(math_scores) |
425 std(math_scores) |
426 \end{lstlisting} |
426 \end{lstlisting} |
427 \inctime{10} |
427 \inctime{10} |
428 \end{frame} |
428 \end{frame} |
429 |
429 |
430 \begin{frame}[fragile] |
430 \begin{frame}[fragile] |
431 \frametitle{Obtaining statistics: efficiently!} |
431 \frametitle{Obtaining statistics: efficiently!} |
432 \begin{lstlisting} |
432 \begin{lstlisting} |
433 math_array = array(math_scores) |
433 math_array = array(math_scores) |
434 |
434 |
435 print "Mean: ", mean(math_array) |
435 print 'Mean: ', mean(math_array) |
436 |
436 |
437 print "Median: ", median(math_array) |
437 print 'Median: ', median(math_array) |
438 |
438 |
439 print "Standard Deviation: ", |
439 print 'Standard Deviation: ', |
440 std(math_array) |
440 std(math_array) |
441 \end{lstlisting} |
441 \end{lstlisting} |
442 \inctime{5} |
442 \inctime{5} |
443 \end{frame} |
443 \end{frame} |
444 |
444 |