gherson / Exemplar

Exemplar

See LOG.md for status.

The goal of this project is synthesis of working (unpolished) Python functions from example input/output and assertions.

Currently, if/elif, for loop, and break controls are synthesized until all given examples pass.

Exemplar's mechanisms for finding conforming code are deduction, generate-and-test, and asking multiple choice questions.

Examples that result in the function at bottom:

"""
leapYear(int year):
returns true iff
* the year is divisible by 4 and not divisible by 100 (eg, 2012, 2016, 2020, 2024)
or
* the year is divisible by 400 (eg, 2000, 2400, 2800)
"""
<399
True
>False

<400
i1 % 400 == 0
>True

<2012
i1 % 4 == 0 and i1 % 100 != 0
>True

<2000
i1 % 400 == 0
>True

<2013
True
>False

<2014
True
>False

<2015
True
>False

<2016
i1 % 4 == 0 and i1 % 100 != 0
>True

<2020
i1 % 4 == 0 and i1 % 100 != 0
>True

<2400
i1 % 400 == 0
>True

is interpreted to mean

def leap_year():
    i1 = int(input("i1:"))  # Eg, 399
    if i1%400==0:
        print(True)
        return True
    elif i1 % 4 == 0 and i1 % 100 != 0:
        print(True)
        return True
    elif True:
        print(False)
        return False

Per-example unit tests are also generated.

This project is licensed under the terms of the GPL v3 license.