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Permettez-moi de commencer en disant que je suis nouveau sur Linux. Je travaille sur la modification du code de github. Le programme d'origine fonctionne bien (un graphique à bandes). Lorsque je tente de saisir les variables des zones d'entrée que je reçois l'erreur suivante:La zone d'entrée globale de tkinter n'a pas d'attribut 'get'
Exception in Tkinter callback
Traceback (most recent call last):
File "/usr/lib/python3.2/tkinter/__init__.py", line 1426, in __call__
return self.func(*args)
File "/home/pi/SCRAP.py", line 49, in show_entry_fields
frequency = float (e1.get())
AttributeError: 'NoneType' object has no attribute 'get'
Le code que j'ai ajouté est entre les deux extrémités début de l'édition et l'édition des commentaires. Toute aide est grandement appréciée. Le code que j'ai est la suivante:
from tkinter import *
import math, random, threading, time
class StripChart:
def __init__(self, root):
self.gf = self.makeGraph(root)
self.cf = self.makeControls(root)
self.gf.pack()
self.cf.pack()
self.Reset()
def makeGraph(self, frame):
self.sw = 1000
self.h = 200
self.top = 2
gf = Canvas(frame, width=self.sw, height=self.h+10,
bg="#002", bd=0, highlightthickness=0)
gf.p = PhotoImage(width=2*self.sw, height=self.h)
self.item = gf.create_image(0, self.top, image=gf.p, anchor=NW)
return(gf)
def makeControls(self, frame):
cf = Frame(frame, borderwidth=1, relief="raised")
Button(cf, text="Run", command=self.Run).grid(column=2, row=4)
Button(cf, text="Stop", command=self.Stop).grid(column=4, row=4)
Button(cf, text="Reset", command=self.Reset).grid(column=6, row=4)
#editing start
Button(cf, text="Cycle", command=self.show_entry_fields).grid(column=7, row=4)
Label(cf, text="Frequency(Hz)").grid(column=1, row=2)
Label(cf, text="P-P Current(mA)").grid(column=1, row=3)
global e1,e2
e1=Entry(cf).grid(column=2, row=2)
e2=Entry(cf).grid(column=2, row=3)
#editing end
self.fps = Label(cf, text="0 fps")
self.fps.grid(column=2, row=5, columnspan=5)
return(cf)
#editing start
def show_entry_fields(self):
#print("Frequency: %s\nMilliamps: %s\n" % (e1.get(),e2.get()))
frequency = float (e1.get())
currrent = float (e2.get())
#print(check_var.get())
print(frequency+1)
print(current+1)
#editing end
def Run(self):
self.go = 1
for t in threading.enumerate():
if t.name == "_gen_":
print("already running")
return
threading.Thread(target=self.do_start, name="_gen_").start()
def Stop(self):
self.go = 0
for t in threading.enumerate():
if t.name == "_gen_":
t.join()
def Reset(self):
self.Stop()
self.clearstrip(self.gf.p, '#345')
def do_start(self):
t = 0
y2 = 0
tx = time.time()
while self.go:
y1 = 0.2*math.sin(0.02*math.pi*t)
y2 = 0.9*y2 + 0.1*(random.random()-0.5)
self.scrollstrip(self.gf.p,
(0.25+y1, 0.25, 0.7+y2, 0.6, 0.7, 0.8),
('#ff4', '#f40', '#4af', '#080', '#0f0', '#080'),
"" if t % 65 else "#088")
t += 1
if not t % 100:
tx2 = time.time()
self.fps.config(text='%d fps' % int(100/(tx2 - tx)))
tx = tx2
# time.sleep(0.001)
def clearstrip(self, p, color): # Fill strip with background color
self.bg = color # save background color for scroll
self.data = None # clear previous data
self.x = 0
p.tk.call(p, 'put', color, '-to', 0, 0, p['width'], p['height'])
def scrollstrip(self, p, data, colors, bar=""): # Scroll the strip, add new data
self.x = (self.x + 1) % self.sw # x = double buffer position
bg = bar if bar else self.bg
p.tk.call(p, 'put', bg, '-to', self.x, 0,
self.x+1, self.h)
p.tk.call(p, 'put', bg, '-to', self.x+self.sw, 0,
self.x+self.sw+1, self.h)
self.gf.coords(self.item, -1-self.x, self.top) # scroll to just-written column
if not self.data:
self.data = data
for d in range(len(data)):
y0 = int((self.h-1) * (1.0-self.data[d])) # plot all the data points
y1 = int((self.h-1) * (1.0-data[d]))
ya, yb = sorted((y0, y1))
for y in range(ya, yb+1): # connect the dots
p.put(colors[d], (self.x,y))
p.put(colors[d], (self.x+self.sw,y))
self.data = data # save for next call
def main():
root = Tk()
root.title("StripChart")
app = StripChart(root)
root.mainloop()
main()