I seem to be having a formatting problem between Thunderbird on my PC and the mailing list; I am loosing all indentation. The Gmail account settings on Thunderbird are for plain text and I set the e-mail content to fixed width text so I'm not sure what's going wrong. I am trying one last time sending from Gmail (as fixed text).
# 7.2_quadratic2easy.py # A program that computes the real roots of a quadratic equation. # Bad version using a simple if to avoid program crash # This version uses the EasyGUI graphics library # See http://easygui.sourceforge.net/ for EasyGUI details import math from easygui import * def main(): msg = "This program finds the real solutions to a quadratic" + "\n" + \ "Please enter the three coefficients below." title = "quadratic2easy.py" fieldNames = ["First coefficient","Second coefficient","Third coefficient"] fieldValues = [] # we start with blanks for the values fieldValues = multenterbox(msg,title, fieldNames) # make sure that none of the fields was left blank while 1: if fieldValues == None: break errmsg = "" for i in range(len(fieldNames)): if fieldValues[i].strip() == "": errmsg = errmsg + ('"%s" is a required field.' % fieldNames[i]) if errmsg == "": break # no problems found fieldValues = multenterbox(errmsg, title, fieldNames, fieldValues) print("Reply was:", fieldValues) a = int(fieldValues[0]) b = int(fieldValues[1]) c = int(fieldValues[2]) discrim = a * a - 4 * b * c if discrim >= 0: discRoot = math.sqrt(discrim) root1 = (-a + discRoot) / (2 * b) root2 = (-a - discRoot) / (2 * b) message = "The real solutions to the quadratic equation are " + str(root1) + " and " + str(root2) msgbox(msg=message, title="quadratic2easy.py", ok_button="OK", image=None) main() -- There is nothing more difficult to take in hand, more perilous to conduct, or more uncertain in its success, than to take the lead in the introduction of a new order of things -- Niccolo Machiavelli, The Prince, ch. 6 _______________________________________________ Tutor maillist - Tutor@python.org To unsubscribe or change subscription options: http://mail.python.org/mailman/listinfo/tutor
