如何使用在文件中找到的值进行进一步计算
How to use the value found in file for further calculations
在两位 Whosebug 用户的大力帮助下，我编写了这段代码。它是应该从 GCODE（3D 打印机创建对象的代码）中提取灯丝值的代码。到目前为止，它运行良好，值显示在 tkinter window 中，如我所愿。问题是这个值表示所用灯丝的体积。现在我想在 tkinter window 中计算和显示另外两个值 1) 质量将是 volume*1,13，然后是新发现的价格 mass*0.175。问题是我无法弄清楚如何使用在 gcode 中找到的这个值并使其可用于计算。 self.value 是从加载文件中找到的初始变量（这里我附上了您可以用来测试代码的示例 gcode 文件：smaple gcode）。我认为问题是这个值是一个字符串，它应该是一个整数，以便在代码中进行计算我试图将其更改为整数，但它不起作用，所以我将其注释掉了。非常感谢您提供所有可能的提示和帮助。
P.S 另外，我希望在上传文件后更改状态栏，但我也遇到了问题。
整体代码：
from tkinter import *
import re
from tkinter import messagebox
from tkinter import filedialog
# Here, we are creating our class, Window, and inheriting from the Frame
# class. Frame is a class from the tkinter module. (see Lib/tkinter/__init__)
class Window(Frame):
# Define settings upon initialization. Here you can specify
def __init__(self, master=None):
# parameters that you want to send through the Frame class.
Frame.__init__(self, master)
#reference to the master widget, which is the tk window
self.master = master
#with that, we want to then run init_window, which doesn't yet exist
self.init_window()
# Load the gcode file in and extract the filament value
def get_filament_value(self, fileName):
with open(fileName, 'r') as f_gcode:
data = f_gcode.read()
re_value = re.search('filament used = .*? \(([0-9.]+)', data)
if re_value:
value = float(re_value.group(1))
return('Volume of the print is {} cm3'.format(value))
else:
value = 0.0
return('Filament volume was not found in {}'.format(fileName))
return value
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
# self.value.set(self.get_filament_value(root.fileName))
volume = self.get_filament_value(root.fileName)
mass = volume * 1.13
price = mass * 0.175
self.volume_text.set('Volume is {}'.format(volume))
self.mass_text.set('Mass is {}'.format(mass))
self.price_text.set('Price is {}'.format(price))
def client_exit(self):
exit()
def about_popup(self):
messagebox.showinfo("About", "Small software created by Bartosz Domagalski to find used filament parameters from Sli3er generated GCODE")
#Creation of init_window
def init_window(self):
# changing the title of our master widget
self.master.title("Filament Data")
# allowing the widget to take the full space of the root window
self.pack(fill=BOTH, expand=1)
# creating a menu instance
menu = Menu(self.master)
self.master.config(menu=menu)
# create the file object)
file = Menu(menu)
help = Menu(menu)
# adds a command to the menu option, calling it exit, and the
# command it runs on event is client_exit
file.add_command(label="Exit", command=self.client_exit)
help.add_command(label="About", command=self.about_popup)
#added "file" to our menu
menu.add_cascade(label="File", menu=file)
menu.add_cascade(label="Help", menu=help)
#Creating the labels
l_instruction = Label(self, justify=CENTER, compound=TOP, text="Load GCODE file to find volume, \n weight and price of used filament.")
l_instruction.pack()
#Creating the button
gcodeButton = Button(self, text="Load GCODE", command=self.read_gcode)
gcodeButton.pack()
# gcodeButton.place(x=60, y=50)
#Label of the used filament
l1 = Label(self, text="")
l1.pack()
l2 = Label(self, text="")
l2.pack()
self.volume_text = StringVar()
l = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.volume_text)
l.pack()
self.mass_text = StringVar()
m = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.mass_text)
m.pack()
self.price_text = StringVar()
p = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.price_text)
p.pack()
#status Bar
status = Label(self, text="Waiting for file...", bd=1, relief=SUNKEN, anchor=W)
status.pack(side=BOTTOM, fill=X)
# root window created. Here, that would be the only window, but you can later have windows within windows.
root = Tk()
root.resizable(width=False,height=False);
root.geometry("220x300")
#creation of an instance
app = Window(root)
#mainloop
root.mainloop()
这是我得到的错误：
Traceback (most recent call last):
File "/Users/domagalski/Desktop/test.py", line 112, in <module>
app = Window(root)
File "/Users/domagalski/Desktop/test.py", line 20, in init
self.init_window()
File "/Users/domagalski/Desktop/test.py", line 95, in init_window
self.mass = self.value(self.get_filament_value(root.fileName))
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tkinter/__init__.py", line 1939, in getattr
return getattr(self.tk, attr)
AttributeError: '_tkinter.tkapp' object has no attribute 'fileName'
在您的 init_window 方法中，您正在尝试访问 root.fileName:
def init_window(self):
# ...
self.mass = self.value.set(self.get_filament_value(root.fileName))
# ...
root.fileName 设置在 read_gcode:
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
# ...
但是 read_gcode 只有在用户单击按钮时才会被调用：
gcodeButton = Button(self, text="Load GCODE", command=self.read_gcode)
因为你需要用户点击Load GCODE按钮来获取文件名，你应该从init_window中删除self.mass = ...代码: 当调用 init_window 时，root.fileName 尚不可用。将该代码移入 read_gcode.
您遇到的另一个问题是您将 self.mass 分配给 self.value.set() 编辑的值 return，即 None。您应该改用 self.get_filament_value().
中的 return 值
换句话说，改变这个：
def get_filament_value(self, fileName):
# ...
if re_value:
value = float(re_value.group(1))
return('Volume of the print is {} cm3'.format(value))
else:
value = 0.0
return('Filament volume was not found in {}'.format(fileName))
return value
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
self.value.set(self.get_filament_value(root.fileName))
def init_window(self):
# ...
self.value = StringVar()
l = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.value)
l.pack()
# self.mass = self.value.set(self.get_filament_value(root.fileName))
# int(self.mass)
# m = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.mass)
# m.pack()
# ...
对此：
def get_filament_value(self, fileName):
# ...
if re_value:
return float(re_value.group(1))
else:
return 0.0
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
volume = self.get_filament_value(root.fileName)
mass = volume * 1.13
self.volume_text.set('Volume is {}'.format(volume))
self.mass_text.set('Mass is {}'.format(mass))
def init_window(self):
# ...
self.volume_text = StringVar()
self.mass_text = StringVar()
volume_label = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.volume_text)
volume_label.pack()
mass_label = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.mass_text)
mass_label.pack()
# ...
在两位 Whosebug 用户的大力帮助下，我编写了这段代码。它是应该从 GCODE（3D 打印机创建对象的代码）中提取灯丝值的代码。到目前为止，它运行良好，值显示在 tkinter window 中，如我所愿。问题是这个值表示所用灯丝的体积。现在我想在 tkinter window 中计算和显示另外两个值 1) 质量将是 volume*1,13，然后是新发现的价格 mass*0.175。问题是我无法弄清楚如何使用在 gcode 中找到的这个值并使其可用于计算。 self.value 是从加载文件中找到的初始变量（这里我附上了您可以用来测试代码的示例 gcode 文件：smaple gcode）。我认为问题是这个值是一个字符串，它应该是一个整数，以便在代码中进行计算我试图将其更改为整数，但它不起作用，所以我将其注释掉了。非常感谢您提供所有可能的提示和帮助。
P.S 另外，我希望在上传文件后更改状态栏，但我也遇到了问题。
整体代码：
from tkinter import *
import re
from tkinter import messagebox
from tkinter import filedialog
# Here, we are creating our class, Window, and inheriting from the Frame
# class. Frame is a class from the tkinter module. (see Lib/tkinter/__init__)
class Window(Frame):
# Define settings upon initialization. Here you can specify
def __init__(self, master=None):
# parameters that you want to send through the Frame class.
Frame.__init__(self, master)
#reference to the master widget, which is the tk window
self.master = master
#with that, we want to then run init_window, which doesn't yet exist
self.init_window()
# Load the gcode file in and extract the filament value
def get_filament_value(self, fileName):
with open(fileName, 'r') as f_gcode:
data = f_gcode.read()
re_value = re.search('filament used = .*? \(([0-9.]+)', data)
if re_value:
value = float(re_value.group(1))
return('Volume of the print is {} cm3'.format(value))
else:
value = 0.0
return('Filament volume was not found in {}'.format(fileName))
return value
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
# self.value.set(self.get_filament_value(root.fileName))
volume = self.get_filament_value(root.fileName)
mass = volume * 1.13
price = mass * 0.175
self.volume_text.set('Volume is {}'.format(volume))
self.mass_text.set('Mass is {}'.format(mass))
self.price_text.set('Price is {}'.format(price))
def client_exit(self):
exit()
def about_popup(self):
messagebox.showinfo("About", "Small software created by Bartosz Domagalski to find used filament parameters from Sli3er generated GCODE")
#Creation of init_window
def init_window(self):
# changing the title of our master widget
self.master.title("Filament Data")
# allowing the widget to take the full space of the root window
self.pack(fill=BOTH, expand=1)
# creating a menu instance
menu = Menu(self.master)
self.master.config(menu=menu)
# create the file object)
file = Menu(menu)
help = Menu(menu)
# adds a command to the menu option, calling it exit, and the
# command it runs on event is client_exit
file.add_command(label="Exit", command=self.client_exit)
help.add_command(label="About", command=self.about_popup)
#added "file" to our menu
menu.add_cascade(label="File", menu=file)
menu.add_cascade(label="Help", menu=help)
#Creating the labels
l_instruction = Label(self, justify=CENTER, compound=TOP, text="Load GCODE file to find volume, \n weight and price of used filament.")
l_instruction.pack()
#Creating the button
gcodeButton = Button(self, text="Load GCODE", command=self.read_gcode)
gcodeButton.pack()
# gcodeButton.place(x=60, y=50)
#Label of the used filament
l1 = Label(self, text="")
l1.pack()
l2 = Label(self, text="")
l2.pack()
self.volume_text = StringVar()
l = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.volume_text)
l.pack()
self.mass_text = StringVar()
m = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.mass_text)
m.pack()
self.price_text = StringVar()
p = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.price_text)
p.pack()
#status Bar
status = Label(self, text="Waiting for file...", bd=1, relief=SUNKEN, anchor=W)
status.pack(side=BOTTOM, fill=X)
# root window created. Here, that would be the only window, but you can later have windows within windows.
root = Tk()
root.resizable(width=False,height=False);
root.geometry("220x300")
#creation of an instance
app = Window(root)
#mainloop
root.mainloop()
这是我得到的错误：
Traceback (most recent call last):
File "/Users/domagalski/Desktop/test.py", line 112, in <module>
app = Window(root)
File "/Users/domagalski/Desktop/test.py", line 20, in init
self.init_window()
File "/Users/domagalski/Desktop/test.py", line 95, in init_window
self.mass = self.value(self.get_filament_value(root.fileName))
File "/Library/Frameworks/Python.framework/Versions/3.5/lib/python3.5/tkinter/__init__.py", line 1939, in getattr
return getattr(self.tk, attr)
AttributeError: '_tkinter.tkapp' object has no attribute 'fileName'
在您的 init_window 方法中，您正在尝试访问 root.fileName:
def init_window(self):
# ...
self.mass = self.value.set(self.get_filament_value(root.fileName))
# ...
root.fileName 设置在 read_gcode:
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
# ...
但是 read_gcode 只有在用户单击按钮时才会被调用：
gcodeButton = Button(self, text="Load GCODE", command=self.read_gcode)
因为你需要用户点击Load GCODE按钮来获取文件名，你应该从init_window中删除self.mass = ...代码: 当调用 init_window 时，root.fileName 尚不可用。将该代码移入 read_gcode.
您遇到的另一个问题是您将 self.mass 分配给 self.value.set() 编辑的值 return，即 None。您应该改用 self.get_filament_value().
换句话说，改变这个：
def get_filament_value(self, fileName):
# ...
if re_value:
value = float(re_value.group(1))
return('Volume of the print is {} cm3'.format(value))
else:
value = 0.0
return('Filament volume was not found in {}'.format(fileName))
return value
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
self.value.set(self.get_filament_value(root.fileName))
def init_window(self):
# ...
self.value = StringVar()
l = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.value)
l.pack()
# self.mass = self.value.set(self.get_filament_value(root.fileName))
# int(self.mass)
# m = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.mass)
# m.pack()
# ...
对此：
def get_filament_value(self, fileName):
# ...
if re_value:
return float(re_value.group(1))
else:
return 0.0
def read_gcode(self):
root.fileName = filedialog.askopenfilename(filetypes = (("GCODE files", "*.gcode"), ("All files", "*.*")))
volume = self.get_filament_value(root.fileName)
mass = volume * 1.13
self.volume_text.set('Volume is {}'.format(volume))
self.mass_text.set('Mass is {}'.format(mass))
def init_window(self):
# ...
self.volume_text = StringVar()
self.mass_text = StringVar()
volume_label = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.volume_text)
volume_label.pack()
mass_label = Label(self, justify=CENTER, compound=BOTTOM, textvariable=self.mass_text)
mass_label.pack()
# ...