python modual problem with terminal

Question

I have written this program in python:

print("CC ACTIVATED")
import lcddriver
import time
import subprocess
from datetime import datetime
from pydub import AudioSegment
from pydub.playback import play
display = lcddriver.lcd()
try:
 display.lcd_display_string("CC... ", 1) 
 time.sleep(2)
 display.lcd_display_string("ONLINE", 2)
 time.sleep(2)
 display.lcd_clear()
except Exception:
 print("SCREEN ERROR")
try:
 display.lcd_display_string("SETUP A", 1) 
 display.lcd_display_string("PASSWORD? Y/N", 2)
except Exception:
 print("SCREEN ERROR")
activate = input("")
if activate == 'y':
 print("ACTIVATED")
 try:
 display.lcd_clear()
 display.lcd_display_string("", 1) 
 time.sleep(2)
 display.lcd_display_string("LOADING", 2)
 time.sleep(2)
 display.lcd_clear()
 except Exception:
 print("SCREEN ERROR")
else:
 print("ABORT")
 try:
 display.lcd_clear()
 display.lcd_display_string("", 1) 
 time.sleep(2)
 display.lcd_display_string("ABORT", 2)
 time.sleep(2)
 display.lcd_clear()
 subprocess.call(["sudo","halt"])
 except Exception:
 print("SCREEN ERROR")
 subprocess.call(["sudo","halt"])
k = True
while k:
 
 try:
 display.lcd_clear()
 display.lcd_display_string("ENTER PASSWORD", 1) 
 display.lcd_display_string("----------------", 2)
 except Exception:
 print("SCREEN ERROR")
 pasword = input("")
 display.lcd_clear()
 try:
 display.lcd_clear()
 display.lcd_display_string("YOU TYPED:", 1) 
 display.lcd_display_string(pasword, 2)
 time.sleep(2)
 display.lcd_display_string("CONFIRM? Y/N", 1) 
 except Exception:
 print("SCREEN ERROR")
 ok = input("")
 if ok == 'y':
 k = False
 else:
 display.lcd_clear()
try:
 display.lcd_clear()
 display.lcd_display_string("PASSWORD", 1) 
 display.lcd_display_string("SET", 2)
except Exception:
 print("SCREEN ERROR")
time.sleep(2)
run = True
try:
 display.lcd_clear()
 display.lcd_display_string("STARTING ", 1) 
 display.lcd_display_string("GAME...", 2)
except Exception:
 print("SCREEN ERROR")
time.sleep(2)
password_attempts = 0
while run and password_attempts < 4:
 try:
 display.lcd_clear()
 display.lcd_display_string("ENTER PASSWORD ", 1) 
 display.lcd_display_string("TO DEACTIVATE", 2)
 except Exception:
 print("SCREEN ERROR")
 pasword1 = input("")
 if pasword1 == pasword:
 try:
 display.lcd_clear()
 display.lcd_display_string("PASSWORD....", 1)
 time.sleep(2)
 display.lcd_display_string("ACCEPTED", 2)
 time.sleep(2)
 display.lcd_clear()
 display.lcd_display_string("DEACTIVATED", 2)
 subprocess.call(["sudo","halt"])
 time.sleep(10)
 except Exception:
 print("SCREEN ERROR")
 subprocess.call(["sudo","halt"])
 else:
 password_attempts += 1
 try:
 display.lcd_clear()
 display.lcd_display_string("PASSWORD....", 1)
 time.sleep(2)
 display.lcd_display_string("UNACCEPTED", 2)
 time.sleep(2)
 except Exception:
 print("SCREEN ERROR")
 if password_attempts == 3:
 last_request = datetime.now()
 current_request = datetime.now()
 while((current_request - last_request).total_seconds() < 5 * 60):
 #Code to play music
 current_request = datetime.now()
 try:
 display.lcd_clear()
 display.lcd_display_string("ENTER PASSWORD ", 1) 
 display.lcd_display_string("TO DEACTIVATE", 2)
 except Exception:
 print("SCREEN ERROR")
 pasword1 = input("")
 if pasword1 == pasword:
 try:
 display.lcd_clear()
 display.lcd_display_string("PASSWORD....", 1)
 time.sleep(2)
 display.lcd_display_string("ACCEPTED", 2)
 time.sleep(2)
 display.lcd_clear()
 display.lcd_display_string("DEACTIVATED", 2)
 subprocess.call(["sudo","halt"])
 time.sleep(10)
 except Exception:
 print("SCREEN ERROR")
 subprocess.call(["sudo","halt"])
 else:
 if ((current_request - last_request).total_seconds() < 5 * 60):
 password_attempts = 1
 try:
 display.lcd_clear()
 display.lcd_display_string("PASSWORD....", 1)
 time.sleep(2)
 display.lcd_display_string("UNACCEPTED", 2)
 time.sleep(2)
 except Exception:
 print("SCREEN ERROR")
 sound = AudioSegment.from_mp3('/home/pi/lcd/export_ofoct.com(1)-[AudioTrimmer.com](1).mp3')
 play(sound)
 print("ALARM")
 else:
 try:
 display.lcd_clear()
 display.lcd_display_string("PASSWORD....", 1)
 time.sleep(2)
 display.lcd_display_string("UNACCEPTED", 2)
 time.sleep(2)
 except Exception:
 print("SCREEN ERROR")
 print("NO ALARM")

When I run it with python3 idle everything works fine, but in the terminal I get this:

Traceback (most recent call last):
 File "/home/pi/lcd/CC.py", line 6, in <module>
 from pydub import AudioSegment
ModuleNotFoundError: No module named 'pydub'

I ran this command to install pydub:

pip3 install pydub

I just don't understand why it isn't working with the terminal. Is there a way to fix this? This is the command I use:

python3 /home/lcd/CC.py

• Dirk: Are you sure you use python 3 on the command line? Use python3 to start your script. BTW: please post full error messages in future. There is valuable info in there (most likely a reference to the python version)
• UNKNOWN: @Dirk I am positive that I'm using python3 on the command line.
• UNKNOWN: @Dirk p.s That's the entire error.
• user115418: What user did you run the pip3 command as? That needs to be the same as the user running the program unless you use sudo pip3 I see the code is in /home/lcd so I'm assuming you have created a user lcd and running the program under that so I may be 100% wrong here :-)

Answer 1

This is NOT Pi specific, and you have NOT provided sufficient detail to actually provide a definitive solution. The following is most likely the cause.

Unless pydub.py is in the same directory as your program it should be in a directory on the PYTHONPATH, BUT it is preferable to install with sudo pip3 install pydub so it is available to all users/programs.