PySimpleGUI/ProgrammingClassExamples/MacOS versions/8b PSG (Tables and calc from csv file).py

#PySimple examples (v 3.9.3)
#Tony Crewe
#Oct 2018 MacOs

#Based of Example program from MikeTheWatchGuy
#https://gitlab.com/lotspaih/PySimpleGUI

import sys
import PySimpleGUI as sg
import csv
#sg.ChangeLookAndFeel('BrownBlue')
sg.SetOptions(background_color = 'LightBlue',
              element_background_color = 'LightBlue')
                     
def calc_ladder():

    filename = sg.PopupGetFile('Get required file', no_window = True,file_types=(("CSV Files","*.csv"),))
    #populate table with file contents
    #Assume we know csv has heading in row 1
    #Assume we know 7 columns of data - relevenat to AFL w/o Pts or % shown
    #data is a list of lists containing data about each team
    #data[0] is one teams data data[0[[0] = team, data[0][1] P, data[0] [2] W,
    #data[0][3] L, data [0][4] D, data [0][5] F, data [0][6] A
    #no error checking or validation used.

    #initialise variable
    data = []
    header_list = []
    #read csv
    with open(filename, "r") as infile:     
        reader = csv.reader(infile)
        for i in range (1):                 
            #get headings
            header = next(reader)
            #read everything else into a list of rows
            data = list(reader)             
    #add headings
    header = header + ['%', 'Pts']          
    for i in range (len(data)):
    #calculate % and format to 2 decimal places
        percent = str('{:.2f}'.format(int(data[i][5])/int(data[i][6])*100))
        data[i] = data[i] + [percent]       #add to data
        pts = int(data[i][2])*4 + int(data[i][4])*2
        data[i] = data[i] + [pts]           #add to data
  
    
    #use Table (explore settings) and add to column layout
    #
    #------ With MacOs -- manually adjust col_widths, auto to False ------------
    #
    col_layout = [[sg.Table(values=data, headings=header,col_widths = (16, 4,4,4,4,6,6,7,4), auto_size_columns=False,
                    max_col_width = 30,justification='right', size=(None, len(data)))]]

    layout = [[sg.Column(col_layout, size=(520,360), scrollable=True)],]

    window = sg.Window('AFL Ladder',location = (500, 310), grab_anywhere = False).Layout(layout)
    b, v = window.Read()

slayout = [[sg.Text('Load AFL file to display results with points and percentage', font = ('Arial', 14, 'bold')),
            sg.ReadButton('Load File', font = ('Arial', 14, 'bold'), size = (15,1))]]
swindow = sg.Window('Load File', location = (500,250)).Layout(slayout)

while True:
    button, value = swindow.Read()
    if button is not None:
        if button == 'Load File':
            calc_ladder()
    else:
        break