Fix paths

src/program.py

@@ -26,6 +26,9 @@ picdir = os.path.realpath("/home/firestone/pi-zero-tank/pic")
 libdir = os.path.realpath("/home/firestone/pi-zero-tank/lib")
 if os.path.exists(libdir):
     sys.path.append(libdir)
+else:
+    print("Invalid path: " + libdir)
+    sys.exit(0)
 
 print(f"Pfad zu Grafik: {picdir}")
 print(f"Pfad zu e-Paper-Bibliothek: {libdir}")
@@ -39,7 +42,7 @@ logging.basicConfig(level=logging.DEBUG)
 
 NUM_SAMPLES = 100
 AVG_WINDOWSIZE = 20
-FILE = Path("config.ini")
+FILE = Path(os.path.dirname(os.path.realpath(__file__)), "config.ini")
 ALARM_LEVEL_CM = 5.0
 
 smtp_port = 587
@@ -203,9 +206,11 @@ def get_percent(leer, voll, val):
     return abs(leer - val) / abs(leer - voll) * 100
 
 def send_email(meas, val):
-    with open("password.txt", "r") as f:
-        smtp_password = f.readline()
-    message = """\
+    try:
+        pwpath = Path(os.path.dirname(os.path.realpath(__file__)), "password.txt")
+        with open(pwpath, "r") as f:
+            smtp_password = f.readline()
+            message = """\
 FROM: {1}
 TO: {2}
 Subject: {0}-Tank fast leer!
@@ -217,13 +222,16 @@ Die Fuellhoehe des {0}-Tanks ist zu niedrig. Bitte pruefen!
 Die aktuelle Hoehe betraegt {3:.0f} cm.
 
 Gruesse vom Tank-Computer""".format(meas, sender_email, receiver_email, val)
-    context = ssl.create_default_context()
-    with smtplib.SMTP(smtp_server, smtp_port) as server:
-        #server.set_debuglevel(1)
-        server.ehlo()
-        server.starttls(context=context)
-        server.login(sender_email, smtp_password.strip())
-        server.sendmail(sender_email, receiver_email, message)
+        context = ssl.create_default_context()
+        with smtplib.SMTP(smtp_server, smtp_port) as server:
+            #server.set_debuglevel(1)
+            server.ehlo()
+            server.starttls(context=context)
+            server.login(sender_email, smtp_password.strip())
+            server.sendmail(sender_email, receiver_email, message)
+    except Exception as e:
+        print("Could not send E-mail")
+        print(e)
 
 def display_site_measure(epd, titel, titel_pos, val):
     dp = Image.new('1', (epd.height, epd.width), 255)