ExamsTimer (1) - GitPress.io

Example Python program ExamsTimer (1).py Python version 3.x or newer. To check the Python version use:

python --version

Modules

from tkinter import *
from tkinter import ttk
from tkinter import font
from os import system
import time
import datetime
import sys
import ctypes

Methods

def quit(*args):
def Minimize(*args):
def AddExam(*args):
def RemoveExam(*args):
def EditDuration(*args):
def Rename(*args):
def SetExams(*args):
def update_time():
def getEnd(start, duration):

Code

Python tkinter example

from tkinter import *
from tkinter import ttk
from tkinter import font
from os import system
import time
import datetime
import sys
import ctypes

global scrWidth
global endTime
global exams

#Get Screen Width for future text formatting
try:
    user32 = ctypes.windll.user32
    scrWidth=user32.GetSystemMetrics(0)
except:
    scrWidth=0

def quit(*args):
    Minimize()
    print("\n\n© Néstor Pérez - 2018")
    print("\n\n---------EXIT---------\n")
    if str(input("Are you sure you want to exit? Y/N: ")).upper()=="Y":
        root.destroy()
        system('shutdown -s')
    else:
        SetExams()

def Minimize(*args):
    root.wm_attributes("-topmost", 0)
    root.attributes("-fullscreen", False)
    root.withdraw()

def AddExam(*args):
    Minimize()
    tempExams=[]
    tempDurations=[]
    print("\n\n© Néstor Pérez - 2018")
    print("\n\n---------ADD EXAM---------\n")
    print("Enter exams names, separated from each other by an ENTER. Once you have entered all of them, leave it blank and press ENTER.")
    while True:
        add=str(input("\nExam name: "))
        if not add:
            break
        else:
            add = "• "+add.upper()
            while True:
                try:
                    length = int(input("Enter length in MINUTES (0 for NONE): "))
                    if length >= 0:
                        tempDurations.append(length)
                        break
                except:
                    continue
            tempExams.append(add)
    input("Press ENTER to start...")
    StartTime=datetime.datetime.today()
    for i in tempExams:
        exams.append(i)
        startTimes.append(StartTime)
        durations.append(tempDurations[tempExams.index(i)])
    SetExams()

def RemoveExam(*args):
    if len(exams)>0:
        Minimize()
    while True:
        if len(exams)>0:
            print("\n\n© Néstor Pérez - 2018")
            print("\n\n---------DELETE EXAM---------\n")
            for i in exams:
                print(str(exams.index(i))+" - "+i)
            select=input("\nEnter exam number to delete (BLANK to finish): ")
            if not select:
                SetExams()
                break
            try:
                select=int(select)
                if select < 0 or select > (len(exams)-1):
                    continue
                else:
                    del exams[select]
                    del startTimes[select]
                    del durations[select]
            except:
                continue
        else:
            SetExams()
            break

def EditDuration(*args):
    if len(exams)>0:
        Minimize()
    else:
        return
    while True:
        print("\n\n© Néstor Pérez - 2018")
        print("\n\n---------EDIT DURATION---------\n")
        for i in exams:
            print(str(exams.index(i))+" - "+i+": "+str(durations[exams.index(i)])+" minutes")
        select=input("\nEnter exam to modify (BLANK to finish): ")
        if not select:
            SetExams()
            break
        try:
            select=int(select)
            if select < 0 or select > (len(exams)-1):
                continue
            else:
                newDuration=input("Current set length is "+str(durations[select])+" minutes. Enter desired length in MINUTES: ")
                try:
                    newDuration=int(newDuration)
                    durations[select]=newDuration
                except:
                    print("\n---------DURATION NOT VALID!---------")
        except:
            print("\n---------NOT VALID!---------")

def Rename(*args):
    if len(exams)>0:
        Minimize()
    else:
        return
    while True:
        print("\n\n© Néstor Pérez - 2018")
        print("\n\n---------RENAME---------\n")
        for i in exams:
            print(str(exams.index(i))+" - "+i[2:])
        select=input("\nEnter exam to rename (BLANK to finish): ")
        if not select:
            SetExams()
            break
        try:
            select=int(select)
            if select < 0 or select > (len(exams)-1):
                continue
            else:
                newName="• "+str(input("Current name is "+str(exams[select][2:])+". Enter desired name: ")).upper()

                exams[select]=newName
        except:
            print("\n---------NOT VALID!---------")

def SetExams(*args):
    out=[]
    for i in exams:
        out.append(i)
        if durations[exams.index(i)]!= 0:
            out.append(" ["+str(getEnd(startTimes[exams.index(i)],durations[exams.index(i)]))+"]\n")
        else:
            out.append("\n")
    if len(exams)==0:
        examsList.set("")
    else:
        examsList.set(''.join(out))
    root.deiconify()
    root.attributes("-fullscreen", True)
    root.focus_force()
    root.lift()
    root.wm_attributes("-topmost", 1)

def update_time():
    now = datetime.datetime.today()#Get current time
    now = now.strftime("%H:%M:%S")#Format time
    time.set(now)#Set display label to current time
    root.after(1000, update_time)# Trigger the countdown after 1000ms

def getEnd(start, duration):
    return ((start+datetime.timedelta(minutes=duration)).strftime("%H:%M:%S"))

# Use tkinter lib for showing the clock
root = Tk()#Initializes interpreter and creates the root window
root.attributes("-fullscreen", True)#Set fullscreen?
root.configure(background='black')#Root window background
root.bind("x", quit)#Run quit when x pressed
root.bind("X", quit)#Run quit when X pressed
root.bind("a", AddExam)#Run AddExam when a pressed
root.bind("A", AddExam)#Run AddExam when A pressed
root.bind("d", RemoveExam)#Run RemoveExam when d pressed
root.bind("D", RemoveExam)#Run RemoveExam when D pressed
root.bind("e", EditDuration)#Run EditDuration when e pressed
root.bind("E", EditDuration)#Run EditDuration when E pressed
root.bind("r", Rename)#Run Rename when r pressed
root.bind("R", Rename)#Run Rename when R pressed
root.focus_force()#Call window to be set on top
root.after(0, update_time)#After 0ms, run update_time

# Clock settings
fnt = font.Font(family='Helvetica', size=200, weight='bold')#Defines font to be used
time = StringVar()#Sets txt as a variable string, which can get updated
clock = ttk.Label(root, textvariable=time, font=fnt, foreground="white", background="black")#Define clock
clock.place(relx=0.5, rely=0.0, anchor=N)#Place clock on screen

#Center number
ctrs = ttk.Label(root, text="\t\t\t     XXXXX\t\t|\t    XXXXX\t\t\t\t", font=("Helvetica 35 bold"),foreground="white", background="gray15")
ctrs.place(relx=0.5, rely=1.0, anchor=S)

# Credits
credit = ttk.Label(root, text="© Néstor Pérez | 'X' to exit, 'A' to add, 'D' to delete, 'E' to edit, 'R' to rename", font=("Helvetica 15 bold"),foreground="SystemHighlight", background="black")
credit.place(relx=0.5, rely=0.01, anchor=N)

#Exams and exam times
examsList = StringVar()
exams=[]
startTimes=[]
durations=[]
AddExam()
if scrWidth != 0:
    examsGUI = ttk.Label(root, textvariable=examsList, font=("Helvetica 60"), foreground="white", background="black", wraplength=scrWidth-20)#Define exams list
else:
    examsGUI = ttk.Label(root, textvariable=examsList, font=("Helvetica 60"), foreground="white", background="black")#Define exams list
examsGUI.place(relx=0.01, rely=0.28, anchor=NW)#Place list      

root.lift()
root.focus_force()
root.mainloop()

Useful Links

Articles: https://python-commandments.org/
Python shell: https://bsdnerds.org/learn-python/
Tutorial: https://pythonprogramminglanguage.com/