Question

我正在做一个很容易的项目，许多人以前做过。这是我的硬件设置：

Raspberry Pi 3 w / 16GB SD卡

DHT11温湿度传感器

Raspberry Pi 7“显示器

我正在使用Tkinter和Python 2.7以及Adafruit_DHT库。

代码非常基本

from Tkinter import *
import tkFont
import Adafruit_DHT
import sys
import time

temp = 0

win = Tk()
win.title("Temperature")

sans = tkFont.Font(family='FreeSansBold', size=28, weight=tkFont.BOLD)

Label(win, text="Temperature", relief=SUNKEN, width=15, font=sans).grid(row=0, column=0)
Label(win, text="Humidity", relief=SUNKEN, width=15, font=sans).grid(row=1, column=0)
Label(win, text="Date/Time", relief=SUNKEN, width=15, font=sans).grid(row=2, column=0)

def READ():
    global temp
    humidity, temperature = Adafruit_DHT.read_retry(11, 4)
    temp = temperature*9/5.0 + 32
    Label(win, text=temp, relief=RIDGE, width=15, fg="black", bg="white", font=sans).grid(row=0, column=1)
    Label(win, text=humidity, relief=RIDGE, width=15, fg="black", bg="white", font=sans).grid(row=1, column=1)
    Label(win, text=time.strftime("%b %d %I:%M"), relief=RIDGE, width=15, fg="black", bg="white", font=sans).grid(row=2, column=1)

def read_every_second():
    READ()
    win.after(1000, read_every_second)

win.after(1000, read_every_second)

mainloop()

除了导致内存泄漏外，它的工作原理很好。我确信它正在用“win.after（1000，read_every_second）”调用强制无限循环但是，我不知道如何修复它。

任何帮助都将不胜感激。

Answer 1

感谢发布的那些......

我完全重写了我的代码并消除了泄漏。

我不是一个有成就的程序员，但是，我发帖，所以其他人可以知道我做了什么（与其他人的帮助），使这个项目工作。

from Tkinter import *
import Adafruit_DHT
import time
import tkFont
from PIL import ImageTk, Image

master = Tk()

sans = tkFont.Font(family='FreeSansBold', size=52) #weight=tkFont.BOLD)
#sans = tkFont.Font(family='Roboto', size=52)
dkblue = '#0b1c3c'

master.geometry("700x400")
master.configure(background=dkblue)

temperature = 0
humidity = 0

original = Image.open("./Downloads/fish.png")
resized = original.resize((100, 100), Image.ANTIALIAS)
image = ImageTk.PhotoImage(resized)


m1 = Label(master, text = 'Temp ', bg = dkblue, fg = 'yellow', font = sans)#, relief = RIDGE, borderwidth = 5)
m1.grid(row = 0, column = 0, sticky = E)

w1 = Label(master, text= temperature, bg = dkblue, fg = 'white', font = sans)
w1.grid(row = 0, column = 1, sticky = W)

m2 = Label(master, text = 'Humid ', bg = dkblue, fg = 'yellow', font = sans)#, relief = RIDGE, borderwidth = 5)
m2.grid(row = 1, column = 0, sticky = E)

w2 = Label(master, text = humidity, bg = dkblue, fg = 'white', font = sans)
w2.grid(row = 1, column = 1, sticky = W)

t1 = Label(master, text = 'Date ', bg = dkblue, fg = 'yellow', font = sans)
t1.grid(row = 2, column = 0, sticky = E)

t2 = Label(master, text = time.strftime('%b %d'), bg = dkblue, fg = 'white', font = sans)
t2.grid(row = 2, column = 1, sticky = W)

t3 = Label(master, text = 'Time ', bg = dkblue, fg = 'yellow', font = sans)
t3.grid(row = 3, column = 0, sticky = E)

t3 = Label(master, text = time.strftime('%I:%M:%S'), bg = dkblue, fg = 'white', font = sans)
t3.grid(row = 3, column = 1, sticky = W)

imglabel = Label(master, image=image, bg = dkblue)
imglabel.grid(row = 0, column = 2, sticky = E)

def CHANGE():
    global temperature
    global humidity
    humidity, temperature = Adafruit_DHT.read_retry(11, 4)
    temperature = (temperature * 9/5.0 + 32)
    w1.config(text = temperature)
    w2.config(text = humidity)
    t2.config(text = time.strftime('%b %d'))
    t3.config(text = time.strftime('%I:%M:%S'))
    master.after(2000, CHANGE)

master.after(2000, CHANGE)

mainloop()

Tkinter内存泄漏

1 个答案: