raspberry pi - Can this Python script cause an R Pi freeze? -


the python script below seems cause raspberry pi 3 freeze after few hours when running in background. might file operations in while loop cause memory leak?

i'm starting script via line below in /etc/rc.local

(sleep 10;nohup python3.4 -u /home/pi/soundserve.py /home/pi/soundserve.output.txt 2>&1) &

thanks in advance help!

marc

script:

import os.path import pygame import time  def getparam(name):     f = open("/home/pi/"+name,"r")     lines = f.readlines()     f.close()     if lines:         f = open("/home/pi/"+name,"w")         f.write("")         f.close()         print (lines[0])         return lines[0]     else:         return("none")  def loopsound(n,name):     global lines     x in range(0, n):         pygame.mixer.init()         pygame.mixer.music.load("/home/pi/sounds/"+name+".mp3")         pygame.mixer.music.play(0)          while pygame.mixer.music.get_busy() == true:#            continue             param = getparam("quitsound")             if "stop" in param:                 pygame.mixer.quit()                 lines[:] = []                 break             else:                 time.sleep(1)                 continue         pygame.mixer.quit()         if "stop" in param:break         time.sleep(2)     while true: # main loop     # read last line file     f = open("/home/pi/soundqueue.txt","r")     lines = f.readlines()     f.close()     if lines:         f = open("/home/pi/soundqueue.txt","w")         f.write("")         f.close()         line in reversed(lines):             if line != "\n":                 print (line)                 line = line.strip('\n')                 data = line.split(",")                 if os.path.isfile('/home/pi/sounds/'+str(data[0])+'.mp3'):                     loopsound(int(data[1]),str(data[0]))


Comments

Post a Comment

Popular posts from this blog

android - InAppBilling registering BroadcastReceiver in AndroidManifest -

i'm implementing inapp billing in android app. works well, however, i'm trying decouple broadcast receiver activity manifest. suggestion in android's trivialdrive sample: // important: dynamically register broadcast messages updated purchases. // register receiver here instead of <receiver> in manifest // because call getpurchases() @ startup, therefore can ignore // broadcasts sent while app isn't running. // note: registering listener in activity bad idea, done here // because sample. regardless, receiver must registered after // iabhelper setup, before first call getpurchases(). currently there's class extends broadcastreceiver : public class iabbroadcastreceiver extends broadcastreceiver { /** * intent action receiver should filter for. */ public static final string action = "com.android.vending.billing.purchases_updated"; private final iabbroadcastlistener mlistener; public iabbroadcastreceiver(iabbroadcastlistener listener) { m...
Read more

python Tkinter Capturing keyboard events save as one single string -

is possible store keyboard events 1 string? code below stores 1 char , prints it. card reader or bar code reader, contains collection of character/ string not 1 character @ time. goal save char pressed text variable. from tkinter import * root = tk() def key(event): text= event.char text+= event.char print ("pressed", text) def callback(event): frame.focus_set() print ("clicked at", event.x, event.y) frame = frame(root, width=100, height=100) frame.bind("<key>", key) frame.bind("<button-1>", callback) frame.pack() root.mainloop() currently, creating text variable , everytime key() function gets called, , text stores last character typed. you can define text module level variable , , use module level text inside key function - text = '' def key(event): global text text+= event.char print("pressed", text)
Read more

sql server - Why does Linq-to-SQL add unnecessary COUNT()? -

here tables: create table customer ( cid int primary key, name varchar(32) ) create table ord ( oid int primary key, cid int foreign key references customer, address varchar(20) ) here's linq-to-sql statement: var aaa = c in db.customer select new { c, o = c.ord.tolist() }; and here's inexplicable query generated linq-to-sql: select [t0].[cid] [cid], [t0].[name] [name], [t1].[oid] [oid], [t1].[cid] [cid2], [t1].[address] [address], (select count(*) [dbo].[ord] [t2] [t2].[cid] = [t0].[cid]) [value] [dbo].[customer] [t0] left outer join [dbo].[ord] [t1] on [t1].[cid] = [t0].[cid] order [t0].[cid], [t1].[oid] i want understand how rid of count(*) part. it's entirely uncalled for! linq needs count(*) in order determine number of entries returned o = c.ord.tolist() .
Read more