我正在制作一个GUI,我必须计算每加仑汽车的里程数。我一直收到语法错误,但我不确定我在做错的是我的代码:我编辑了它以反映一些更正
class GasMileage:
def__init__(self)
#Create main window
self.main_window = tkinter.Tk()
#Create 4 frames
self.gallons_frame = tkinter.frame(self.main_windown)
self.miles_frame = tkinter.frame(self.main_windown)
self.button_frame = tkinter.frame(self.main_windown)
self.mpg_frame = tkinter.frame(self.main_window)
#Create and pack widgets Gallons and Miles
self.gallons_label = tkinter.Label(self.gallons_frame, \
text "Enter # of Gallons Used")
self.gallons_entry = tkinter.Entry(self.gallons_frame, \
width = 10)
self.miles_label.pack(side='left')
self.miles_entry.pack(side='left')
self.miles_label = tkinter.Label(self.miles_frame, \
text="Enter miles traveled")
self.miles_entry = tkinter.Entry(self.miles_frame, \
width = 10)
self.miles_label.pack(side='left')
self.miles_entry.pack(side='left')
self.result_label = tkinter.Label(self.mpg_frame, \
text='MPG=')
self.mpg = tkinter.StringVar()
self.mpg_label = tkinter.Label(self.mpg_frame, \
textvariable=self.mpg)
self.result_label.pack (side='left')
self.mpg_label.pack(side='left')
#Create and pack button Widgets
self.calc_button = tkinter.Button(self.button_frame, \
text='Calculate MPG', \
command=self.calc_gallons)
self.quit_button = tkinter.Button(self.button_frame, \
text='Exit', \
command=self.main_window.destroy)
self.calc_button.pack(side='left')
self.quit_button.pack(side='left')
#Pack the frames
self.gallons_frame.pack()
self.miles_frame.pack()
self.buttons_frame.pack()
self.mpg_frame.pack()
tkinter.mainloop()
#Calculate Miles per Gallon
def calc_gallons(self):
self.gallons = float(self.gallons_entry.get())
self.miles = float(self.miles_entry.get())
#Calculate Miles per Gallon
self.mpg = self.miles / self.gallons
gas_miles = GasMileage()
答案 0 :(得分:0)
我修改了你的代码,但它充满了错误和不一致。现在至少它编译并执行:
import tkinter
class GasMileage:
def __init__(self):
#Create main window
self.main_window = tkinter.Tk()
#Create 4 frames
self.gallons_frame = tkinter.Frame(self.main_window)
self.miles_frame = tkinter.Frame(self.main_window)
self.button_frame = tkinter.Frame(self.main_window)
self.mpg_frame = tkinter.Frame(self.main_window)
#Create and pack widgets Gallons and Miles
self.gallons_label = tkinter.Label(self.gallons_frame,
text = "Enter # of Gallons Used")
self.gallons_entry = tkinter.Entry(self.gallons_frame,
width = 10)
self.gallons_label.pack(side='left')
self.gallons_entry.pack(side='left')
self.miles_label = tkinter.Label(self.miles_frame,
text = "Enter miles traveled")
self.miles_entry = tkinter.Entry(self.miles_frame,
width = 10)
self.miles_label.pack(side='left')
self.miles_entry.pack(side='left')
self.result_label = tkinter.Label(self.mpg_frame, text='MPG=')
self.mpg = tkinter.StringVar()
self.mpg_label = tkinter.Label(self.mpg_frame,
textvariable=self.mpg)
self.result_label.pack (side='left')
self.mpg_label.pack(side = 'left')
#Create and pack button Widgets
self.calc_button = tkinter.Button(self.button_frame,
text='Calculate MPG',
command=self.calc_gallons)
self.quit_button = tkinter.Button(self.button_frame,
text='Exit',
command=self.main_window.destroy)
self.calc_button.pack(side='left')
self.quit_button.pack(side='left')
#Pack the frames
self.gallons_frame.pack()
self.miles_frame.pack()
self.button_frame.pack()
self.mpg_frame.pack()
tkinter.mainloop()
#Calculate Miles per Gallon
![enter image description here][1]
def calc_gallons(self):
self.gallons = float(self.gallons_entry.get())
self.miles = float(self.miles_entry.get())
print(self.gallons, self.miles)
#Calculate Miles per Gallon
self.mpg = self.miles / self.gallons
self.result_label['text'] = "'MPG = '{:0.2f}".format(self.mpg)
gas_miles = GasMileage()
截图: