Python Fundamentals

Objective:

• To complete the method stubs in each of the provided python modules
  • calculator.py
  • predicator.py
  • string_manipulator.py

Purpose:

• To establish familiarity with
  • method signatures and return statements
  • primitive data-types
  • class and object-definition
  • unit-testing
  • arrays
  • for loops

Instructions:

1. Fork this Repository
   • fork this repository to your personal github account
   • clone your forked repository to your local machine.
   • Complete steps 2 and 3
   • git add your changes to the list of your commited files.
   • git commit your added files to the list of your staged files.
   • git push your staged files to your remote repository.
   • submit a pull request which compares Perscholas master to your master.
2. Begin by first ensuring the main method in your perscholas_rocks.py module prints "Perscholas Rocks!" upon execution.
3. Complete each of the method stubs in each of the main classes provided.
   • main classes are located in src.main.java.com.github.perscholas.java_fundamentals
   • There are comments above each method stub to describe the expected behavior.
4. Upon completion, open and run the TestSuite class to ensure that all tests have 100% success.
   • TestSuite is located in src.main.java.com.github.perscholas.java_fundamentals

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Demonstrations

Opening in PyCharm

• The purpose of this animation is to demonstrate how to
  1. clone this project from the Github Web interface to your local machine
  2. navigate to the root directory of the project
  3. open the newly cloned project from your local machine in PyCharm
  4. open a module to be edited (calculator.py)
  5. run corresponding tests for the module to be edited (calculator_test.py)

Running Tests From Command Line

• The purpose of this animation is to demonstrate how to
  1. clone this project from the Github Web interface to your local machine
  2. navigate to the root directory of the project
  3. using unittest, run all python files with a prefix of _test.py
     • python -m unittest discover -s ./src/test/ -p '*_test.py'

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Predicate Utilities

• A predicate is a clause which states something about a subject. (e.g., is assigning in "Leon is assigning homework")
• Ensure each of the test cases passes successfully in the class predicator_test.py by completing each of the method stubs in the class predicator.py.
• Method Stubs to be completed
  • is_greater_than_5(some_value)
  • is_greater_than_8(some_value)
  • is_less_than_4(some_value)
  • is_less_than_1(some_value)

Math Utilities

• Ensure each of the test cases passes successfully in the class calculator_test.py by completing each of the method stubs in the class calculator.py.
• Method Stubs to be completed
  • add(first_value, second_value)
  • subtract(first_value, second_value)
  • divide(first_value, second_value)
  • multiply(first_value, second_value)

String Utilities

• Ensure each of the test cases passes successfully in the class string_evaluator_test.py by completing each of the method stubs in the class string_evaluator.py.
• Method Stubs to be completed
  • get_hello_world()
  • concatenate(first_value, second_value)
  • substring_inclusive(string_to_fetch_from, starting_index, ending_index)
  • substring_exclusive(string_to_fetch_from, starting_index, ending_index)
  • compare(first_value, second_value)
  • get_middle_character(string_to_fetch_from)
  • get_first_word(string_to_fetch_from)
  • get_second_word(string_to_fetch_from)
  • reverse(string_to_reverse)