MstrPikachu
102 lines
3.9 KiB
Python
102 lines
3.9 KiB
Python
"""CSC110 Fall 2021 Assignment 2, Part 2: Conditional Execution
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Instructions (READ THIS FIRST!)
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===============================
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This Python module contains the functions you should complete for Part 2, Questions 1 and 2.
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Note that we've only given the headers for the functions that you should complete.
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To test your work against the original functions, we suggest:
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1. Create a NEW Python file (not to be handed in) and copy and paste the original
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functions from the assignment handout into your new file.
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2. a) Run each file in the Python console and call the corresponding functions to
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see if their return values match.
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b) Write a few unit tests that check whether their return values match.
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c) Use hypothesis to create *property-based tests* to see whether their return
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values match on a wide range of inputs. (This is a perfect case when when
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to use property-based testing!!)
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Copyright and Usage Information
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===============================
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This file is provided solely for the personal and private use of students
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taking CSC110 at the University of Toronto St. George campus. All forms of
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distribution of this code, whether as given or with any changes, are
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expressly prohibited. For more information on copyright for CSC110 materials,
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please consult our Course Syllabus.
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This file is Copyright (c) 2021 David Liu, Mario Badr, and Tom Fairgrieve.
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"""
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###############################################################################
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# Part 2, Question 1
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###############################################################################
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def mystery_1a_flat(x: int, y: set[int]) -> str:
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"""Return the same value as mystery_1a_nested, but using just a single if statement."""
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if len(y) > 1 and x <= 0:
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return 'David'
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elif x > 1 and sum({n ** 2 for n in y}) >= 10:
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return 'Mario'
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else:
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return 'David'
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def mystery_1b_flat(n: int, rows_of_nums: list[list[int]]) -> int:
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"""Return the same value as mystery_1b_nested, but using just a single if statement."""
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len_in_range = len(rows_of_nums) > n > 0
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if len_in_range and n == 1:
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return 0
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elif len_in_range and n in rows_of_nums[n]:
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return sum(rows_of_nums[n]) + n
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elif len_in_range:
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return sum(rows_of_nums[0])
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elif len(rows_of_nums) > 20:
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return 20
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else:
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return n
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###############################################################################
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# Part 2, Question 2
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###############################################################################
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def mystery_2a_no_if(x: int, y: int, z: set[int]) -> bool:
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"""Return the same value as mystery_2a_if, but without using any if statements."""
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# if x >= y:
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# return x in z
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# else:
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# return x not in z and y not in z
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return (x >= y and x in z) or (x < y and (x not in z and y not in z))
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def mystery_2b_no_if(n: int) -> bool:
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"""Return the same value as mystery_2b_if, but without using any if statements."""
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return (n % 2 == 0 and n % 3 == 1) or (n % 2 == 1 and (n < 0 or (n > 4 and n % 3 != 1)))
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def mystery_2c_no_if(c1: int, c2: int, c3: int) -> bool:
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"""Return the same value as mystery_2c_if, but without using any if statements."""
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return c1 != c2 and ((c1 > c2 and c3 > c2) or (c1 <= c2 < c3))
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if __name__ == '__main__':
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import python_ta
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import python_ta.contracts
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python_ta.contracts.DEBUG_CONTRACTS = False
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python_ta.contracts.check_all_contracts()
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import doctest
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doctest.testmod()
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# When you are ready to check your work with python_ta, uncomment the following lines.
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# (Delete the "#" and space before each line.)
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# IMPORTANT: keep this code indented inside the "if __name__ == '__main__'" block
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# Leave this code uncommented when you submit your files.
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python_ta.check_all(config={
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'extra-imports': ['python_ta.contracts'],
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'max-line-length': 100,
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'disable': ['R1705']
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})
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