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Completely new set of materials for GUI class! Thanks Tony!!

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MikeTheWatchGuy 2018-10-08 01:36:38 -04:00
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59
ProgrammingClassExamples/7a PSG Text file save and retrieve.py
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#PySimple examples (v 3.8)
#Tony Crewe
#Sep 2018
import PySimpleGUI as sg
import os #to work with windows OS
sg.ChangeLookAndFeel('GreenTan')
sg.SetOptions(font = ('Calibri', 12, 'bold'))
layout = [
[sg.Text('Enter a Name and four Marks')],
[sg.Text('Name:', size =(10,1)), sg.InputText(size = (12,1), key = 'name')],
[sg.Text('Mark1:', size =(10,1)), sg.InputText(size = (6,1), key = 'm1')],
[sg.Text('Mark2:', size =(10,1)), sg.InputText(size = (6,1), key = 'm2')],
[sg.Text('Mark3:', size =(10,1)), sg.InputText(size = (6,1), key = 'm3')],
[sg.Text('Mark4:', size =(10,1)), sg.InputText(size = (6,1), key = 'm4')],
[sg.ReadButton('Save', size = (8,1),key = 'save'), sg.Text('Press to Save to file')],
[sg.ReadButton('Display',size = (8,1), key = 'display'), sg.Text('To retrieve and Display')],
[sg.Multiline(size = (28,4), key = 'multiline')]]
window = sg.Window('Simple Average Finder').Layout(layout)
while True:
button, value = window.Read() #value is a dictionary holding name and marks (4)
if button is not None:
#initialise variables
total = 0.0
index = ''
Name = value['name'] #get name
dirname, filename = os.path.split(os.path.abspath(__file__)) #get pathname to current file
pathname = dirname + '\\results.txt' #add desired file name for saving to path
#needs validation and try/catch error checking, will crash if blank or text entry for marks
if button == 'save':
for i in range (1,5):
index = 'm' + str(i) #create dictionary index m1 ... m4
total += float(value[index])
average = total/4
f = open(pathname, 'w') #open file and save
print (Name, file = f)
print (total, file = f)
print (average, file = f)
f.close()
#some error checking for missing file needed here
if button == 'display':
#This loads the file line by line into a list called data.
#the strip() removes whitespaces from beginning and end of each line.
data = [line.strip() for line in open(pathname)]
#create single string to display in multiline object.
string = 'Name: ' + data[0] +'\nTotal: ' + str(data[1]) + '\nAverage: ' + str(data[2])
window.FindElement('multiline').Update(string)
else:
break