3.1 Itse1359-1720r-review  (Page 4/5)

Go to answer 9

Figure index

• Figure 1 . Question 1 test code named Py1359_1720r_01.txt.
• Figure 2 . Question 1 execution command.
• Figure 3 . Question 1 possible output.
• Figure 4 . Question 1 actual output.
• Figure 5 . Question 2 test code named Py1359_1720r_02.txt.
• Figure 6 . Question 2 execution command.
• Figure 7 . Question 2 possible output.
• Figure 8 . Question 2 actual output.
• Figure 9 . Question 3 Python module named Py1359_1720r_03.py.
• Figure 10 . Question 3 test code named Py1359_1720r_03.txt.
• Figure 11 . Question 3 execution command.
• Figure 12 . Question 3 possible output.
• Figure 13 . Question 4 Python module named Py1359_1720r_04.py.
• Figure 14 . Question 4 execution command.
• Figure 15 . Question 4 possible output.
• Figure 16 . Question 5 Python module named Py1359_1720r_05.py.
• Figure 17 . Question 5 execution command.
• Figure 18 . Question 5 possible output.
• Figure 19 . Question 6 Python module named Py1359_1720r_06.py.
• Figure 20 . Question 6 execution command.
• Figure 21 . Question 6 possible output.
• Figure 22 . Question 7 Python module named Py1359_1720r_07_runner.py.
• Figure 23 . Question 7 Python module named Py1359_1720r_07.py.
• Figure 24 . Question 7 execution command.
• Figure 25 . Question 7 test code named Py1359_1720r_07.txt.
• Figure 26 . Question 7 possible output.
• Figure 27 . Question 8 Python module named Py1359_1720r_08.py.
• Figure 28 . Question 8 test code named Py1359_1720r_08.txt.
• Figure 29 . Question 8 execution command.
• Figure 30 . Question 8 possible output.
• Figure 31 . Question 9 Python module named Py1359_1720r_09.py.
• Figure 32 . Question 9 execution command.
• Figure 33 . Question 9 possible output.
• Figure 34 . Question 9 actual output.

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Answers

Answer 9

False. The actual output is shown in Figure 34 . This question was included topoint out that testing floating point results can be problematic. Many floating point values are simply estimates. Although this example was purposely caused tofail, a given floating point computation may not produce exactly the same results on different platforms. Therefore a test that specifies a given floatingpoint result may pass on one platform and fail on a different platform. The Python Standard Library -- 26.2 doctest -- Test interactive Python examples provides some suggestions for dealing with this issue.