calcuse on android with termux-gui and git

gistfile1.txt

import termuxgui as tg
import sys
import time
import threading
import os
import datetime
import calendar

with tg.Connection() as c:
    
    a = tg.Activity(c)
    
    # For each View or Layout you create you can specify the parent Layout to create a hiearachy.
    # If you don't specify a parent, it will replace the current root View.
    # We first create a LinearLayout as our root View.
    root = tg.LinearLayout(a)
    
    # Then we create a TextView that we will use as a title
    title = tg.TextView(a, "Calendar", root)
    title.setmargin(5)
    
    # We set the font size a bit bigger
    title.settextsize(30)
    
    contenttext = "loading from git..."
    # Now we create a TextView for the main content
    content = tg.TextView(a, contenttext, root)
    hours = tg.LinearLayout(a, root, False)
    eth = tg.EditText(a, "14", hours)
    emi = tg.EditText(a, "00", hours)
    est = tg.EditText(a, "        ", hours)
    buttons = tg.LinearLayout(a, root, False)
    prev = tg.Button(a, "prev", buttons)
    next = tg.Button(a, "next", buttons)
    add = tg.Button(a, "add", buttons)
    push = tg.Button(a, "push", buttons)
    quit = tg.Button(a, "quit", buttons)

    today = datetime.datetime.today()
    tgtday = today + datetime.timedelta(days=7)
    sdat=str(tgtday.month)+"/"+str(tgtday.day)+"/"+str(tgtday.year)
    title.settext(sdat+" "+calendar.day_name[tgtday.weekday()])
    os.system('cd git/LORIA/calcurse; git pull; calcurse -c ./apts -d "'+sdat+'" > $HOME/tt')
    with open("tt") as f: ll = f.readlines()
    ll=' '.join(ll)
    content.settext(ll)
    
    # Now we give the Layout priority to our content Textview so it is bigger than the Button and the title.
    content.setlinearlayoutparams(10)
   
    # create a thread to handle the events, so we can still exit the program after 5 seconds no matter what
    for ev in c.events(): # waits for events from the gui
        if ev.type == tg.Event.destroy and ev.value["finishing"]:
            sys.exit()
        if ev.type == tg.Event.click and ev.value["id"] == quit:
            a.finish()
        if ev.type == tg.Event.click and ev.value["id"] == next:
            tgtday = tgtday + datetime.timedelta(days=1)
            sdat=str(tgtday.month)+"/"+str(tgtday.day)+"/"+str(tgtday.year)
            title.settext(sdat+" "+calendar.day_name[tgtday.weekday()])
            os.system('cd git/LORIA/calcurse; calcurse -c ./apts -d "'+sdat+'" > $HOME/tt')
            with open("tt") as f: ll = f.readlines()
            ll=' '.join(ll)
            content.settext(ll)
        if ev.type == tg.Event.click and ev.value["id"] == prev:
            tgtday = tgtday + datetime.timedelta(days=-1)
            sdat=str(tgtday.month)+"/"+str(tgtday.day)+"/"+str(tgtday.year)
            title.settext(sdat+" "+calendar.day_name[tgtday.weekday()])
            os.system('cd git/LORIA/calcurse; calcurse -c ./apts -d "'+sdat+'" > $HOME/tt')
            with open("tt") as f: ll = f.readlines()
            ll=' '.join(ll)
            content.settext(ll)
        if ev.type == tg.Event.click and ev.value["id"] == add:
            hh = int(eth.gettext().strip())
            mm = int(emi.gettext().strip())
            ss = est.gettext().strip()
            xx = str(tgtday.month)+"/"+str(tgtday.day)+"/"+str(tgtday.year)+" @ "+str(hh)+":"+str(mm)+\
                " -> "+str(tgtday.month)+"/"+str(tgtday.day)+"/"+str(tgtday.year)+" @ "+str(hh+1)+":"+str(mm)+\
                "|"+ss+"\n"
            with open("git/LORIA/calcurse/apts","a") as f:
                f.write(xx)
            content.settext("apt saved")
        if ev.type == tg.Event.click and ev.value["id"] == push:
            os.system('cd git/LORIA/calcurse; git commit -am "caland"; git push')
            content.settext("push done")