Boiler Plate Autograder

This is what you see when you add the autograder.  It’s prefilled with examples of how to write tests.

The Parameters

• student_code: String, the text of the student’s program
• solution_code: String, the text of the solution program
• student_commands: list of lists, contains all Turtle commands called from student’s code
  • see below for the format of the elements
• solution_commands: same format as student_commands; contains Turtle commands called from solution code

Further Explanation of Command Lists

This applies to both student_commands and solution_commands.  It is important to note that these are lists of all Turtle functions called -- calls to user-defined functions or regular Python functions will not show up.

More on functions’ parameters

The elements of student_commands **and solution_commands are all Turtle functions that were called.  There are three forms each element of the commands lists can take, explained below.

• Functions with no parameters. Functions that do not take any parameters will be listed as a list with one element - a string of the function name. See the begin_fill and end_fill functions below.
• Functions with one parameter. Functions that take a single parameter will be listed as a list with two elements - a string of the function name, and the argument. The argument type will be whatever was passed to the function; if the function were passed as string, the argument will be a string.
  • Example: color(“purple”) ** will be listed as [‘color’, ‘purple’]
  • Example: forward(100) will be listed as [‘forward’, 100]
    • Note 100 is still an integer!
• Functions with multiple parameters. Functions that take multiple parameters will be listed as a list in the form [‘fnName’, [‘list’, ‘of’, ‘parameters’]]. The parameters that were given arguments in the code will be filled with the arguments’ values; parameters that were omitted will have a value of ‘None’.
  • Example: circle(60) would be listed as ['circle', [60, 'None','None']]
  • Example: circle(60, 100) would be listed as ['circle', [60, 100,'None']]
  • Example: circle(60, 10, 3) would be listed as ['circle', [60, 10, 3]]
    • circle only takes up to three parameters, which is why each of the results above have an argument list of length three.

Example of user-defined function

If user-defined functions are called and contain Turtle functions, those Turtle functions will appear in the list in the order they were called

If the student’s code is the program below:

then student_commands will be