我不知道如何解决这个问题，也不知道她为什么出现。
该如何解决？
其他人的类似问题与work.tpl变量有关，我认为这段代码不是相同的错误。
StringVar完整错误：
import matplotlib
from math import *
import pylab
from matplotlib import mlab
from matplotlib.backends.backend_tkagg import FigureCanvasTkAgg, NavigationToolbar2TkAgg
from matplotlib.figure import Figure
import tkinter as tk
from tkinter import ttk
from tkinter import *
g = 9.81
class MyData():
v = IntVar()
angle = IntVar()
x0 = IntVar()
y0 = IntVar()
v2 = IntVar()
angle2 = IntVar()
x02 = IntVar()
y02 = IntVar()
v3 = IntVar()
angle3 = IntVar()
x03 = IntVar()
y03 = IntVar()
class Fly(tk.Tk):
def __init__(self, *args, **kwargs):
tk.Tk.__init__(self, *args, **kwargs)
tk.Tk.wm_title(self, "Fly")
container = tk.Frame(self)
container.pack(side="top", fill="both", expand=True)
container.grid_rowconfigure(0, weight=1)
container.grid_columnconfigure(0, weight=1)
self.frames = {}
data = MyData
for F in (StartPage, PageOne):
frame = F(container, self, data)
self.frames[F] = frame
frame.grid(row=0, column=0, sticky="nsew")
self.show_frame(StartPage)
def show_frame(self, cont):
frame = self.frames[cont]
frame.tkraise()
class StartPage(tk.Frame):
def __init__(self, parent, controller, data):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Начальная страница")
label.pack(pady=10, padx=10)
button = ttk.Button(self, text="Visit Page 1",
command=lambda: controller.show_frame(PageOne))
button.pack()
frame2 = Frame(self, borderwidth=4, relief=GROOVE)
frame2.pack()
first = Label(self, text='Данные для первого графика')
first.pack()
second = Label(self, text='Начальная скорость')
second.pack()
entry = Entry(self, width=10, textvariable=data.v)
entry.pack()
third = Label(self, text='Угол выстрела')
third.pack()
entry = Entry(self, width=10, textvariable=data.angle)
entry.pack()
fourth = Label(self, text='Начальная координата x')
fourth.pack()
entry = Entry(self, width=10, textvariable=data.x0)
entry.pack()
fifth = Label(self, text='Начальная координата y')
fifth.pack()
entry = Entry(self, width=10, textvariable=data.y0)
entry.pack()
frame3 = Frame(self, borderwidth=4, relief=GROOVE)
frame3.pack()
first = Label(self, text='Данные для второго графика')
first.pack()
second = Label(self, text='Начальная скорость')
second.pack()
entry = Entry(self, width=10, textvariable=data.v2)
entry.pack()
third = Label(self, text='Угол выстрела')
third.pack()
entry = Entry(self, width=10, textvariable=data.angle2)
entry.pack()
fourth = Label(self, text='Начальная координата x')
fourth.pack()
entry = Entry(self, width=10, textvariable=data.x02)
entry.pack()
fifth = Label(self, text='Начальная координата y')
fifth.pack()
entry = Entry(self, width=10, textvariable=data.y02)
entry.pack()
first = Label(self, text='Данные для третьего графика')
first.pack()
second = Label(self, text='Начальная скорость')
second.pack()
entry = Entry(self, width=10, textvariable=data.v3)
entry.pack()
third = Label(self, text='Угол выстрела')
third.pack()
entry = Entry(self, width=10, textvariable=data.angle3)
entry.pack()
fourth = Label(self, text='Начальная координата x')
fourth.pack()
entry = Entry(self, width=10, textvariable=data.x03)
entry.pack()
fifth = Label(self, text='Начальная координата y')
fifth.pack()
entry = Entry(self, width=10, textvariable=data.y03)
entry.pack()
class PageOne(tk.Frame):
def __init__(self, parent, controller, data):
tk.Frame.__init__(self, parent)
label = tk.Label(self, text="Generate")
label.pack(pady=10, padx=10)
button1 = ttk.Button(self, text="Поменять значения",
command=lambda: controller.show_frame(StartPage))
button1.pack()
f = Figure(figsize=(5, 5), dpi=100)
canvas = FigureCanvasTkAgg(f, self)
canvas.show()
canvas.get_tk_widget().pack(side=tk.BOTTOM, fill=tk.BOTH, expand=True)
toolbar = NavigationToolbar2TkAgg(canvas, self)
toolbar.update()
canvas._tkcanvas.pack(side=tk.TOP, fill=tk.BOTH, expand=True)
t = ((2 * data.v * sin(data.angle)) / g)
vx = data.v * cos(data.angle)
t2 = ((2 * data.v2 * sin(data.angle2)) / g)
vx2 = data.v2 * cos(data.angle2)
t3 = ((2 * data.v3 * sin(data.angle3)) / g)
vx3 = data.v3 * cos(data.angle3)
dx = 0.01
xmin = data.x0
xmax = vx * t * cos(data.angle)
xmin2 = data.x02
xmax2 = vx2 * t2 * cos(data.angle2)
xmin3 = data.x03
xmax3 = vx3 * t3 * cos(data.angle3)
def func(x0, v, y0, angle):
y = x0 * tan(angle) - (1 / (2 * v ** 2)) * ((g * x0 ** 2) / (cos(angle) ** 2)) + y0
if y == 0:
return 0.0
return y
def func2(x02, v2, y02, angle2):
y2 = x02 * tan(angle2) - (1 / (2 * v2 ** 2)) * ((g * x02 ** 2) / (cos(angle2) ** 2)) + y02
if y2 == 0:
return 0.0
return y2
def func3(x03, v3, y03, angle3):
y3 = x03 * tan(angle3) - (1 / (2 * v3 ** 2)) * ((g * x03 ** 2) / (cos(angle3) ** 2)) + y03
if y3 == 0:
return 0.0
return y3
xlist = mlab.frange(xmin, xmax, dx)
xlist2 = mlab.frange(xmin2, xmax2, dx)
xlist3 = mlab.frange(xmin3, xmax3, dx)
ylist = [func(x0, data.v, data.y0, data.angle) for x0 in xlist]
ylist2 = [func2(x02, data.v2, data.y02, data.angle2) for x02 in xlist2]
ylist3 = [func3(x03, data.v3, data.y03, data.angle3) for x03 in xlist3]
pylab.plot(xlist, ylist)
pylab.plot(xlist2, ylist2)
pylab.plot(xlist3, ylist3)
pylab.show()
app = Fly()
app.mainloop()
此错误是否已解决？还是我需要制定其他决策算法？
昨天，我又有一个problem和Traceback (most recent call last):
File "C:/Users/Максим/PycharmProjects/test/test1.py", line 12, in <module>
class MyData():
File "C:/Users/Максим/PycharmProjects/test/test1.py", line 13, in MyData
v = IntVar()
File "D:\Anaconda3\lib\tkinter\__init__.py", line 499, in __init__
Variable.__init__(self, master, value, name)
File "D:\Anaconda3\lib\tkinter\__init__.py", line 314, in __init__
self._root = master._root()
AttributeError: 'NoneType' object has no attribute '_root'
和global