# gym.py
# Lillian Lee (LJL2@cornell.edu)
# Jan 31, 2013


"""Demonstrate defining functions in a module.

Functions for processing gymnastics results.
"""


def dscore(info):
    """Returns: difficulty score, as a float, represented in info.

    Precondition: info is a string with commas separating its
    component values: last name, difficulty score, execution score, penalty."""

    startcomma = info.index(',')
    tail = info[startcomma+1:] # substring of info starting after 1st comma
    endcomma = tail.index(',')
    return float(tail[:endcomma]) # float() takes care of whitespace


# bad style to put these here, but the code below is meant to be inpenetrable
import string
import re


def dscore_alt(info):
    """Returns: difficulty score, as a float, represented in info.

    This is a poorly documented, and possibly buggy, re-implementation; it exists
    merely to demonstrate some testing concepts.

    Precondition: info is a string with commas separating its
    component values: last name, difficulty score, execution score, penalty."""

    #Implemented in a way unfamiliar/unreadable to the typical CS1110 student, on purpose.
    replacestring = '[' + string.punctuation.replace('.','').replace('-','') + '-' + ']'
    try:
        return float(re.split(replacestring,info)[1])
    except:
        return -15.0