我正在开发一个计算器，根据你花多少钱计算，你在月底会有多少钱。
我将为您提供.kv和.py。问题是，我已经完成了视觉效果，并且我已经创建了包含数学的计算器类，现在我需要将它组合成一个正常运行的GUI应用程序。
所以我想要实现的是应用程序，当你点击标有＆＃34; izracunaj＆＃34;，计算器类（在＆＃39;＆＃39;＆＃39;）中的按钮时应该接受用户输入并计算并返回结果。
main.py
import kivy
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.image import Image
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
class Screen(GridLayout):
def __init__(self, **kwargs):
super(Screen, self).__init__(**kwargs)
self.cols = 1
self.add_widget(Label(text="Koliko imas na racunu"))
self.stanjeNovaca = TextInput(multiline=False)
self.add_widget(self.stanjeNovaca)
self.add_widget(Label(text="Koliko dana do place"))
self.stanjeDani = TextInput(multiline=False)
self.add_widget(self.stanjeDani)
self.add_widget(Label(text="Koliko trosis na dan"))
self.stanjePotrosnja = TextInput(multiline=False)
self.add_widget(self.stanjePotrosnja)
'''
class Calculator():
def calculation():
stanjeNovaca = input("Koliko imas para na racunu? ")
stanjeDani = input("Koliko dana do place? ")
stanjePotrosnja = input("koliko trosis na dan? ")
svakiDanTrosis = stanjeDani*stanjePotrosnja
naKrajuMjeseca = stanjeNovaca-svakiDanTrosis
print("Ako svaki dan trosis {}, na kraju mjeseca ce ti ostati {}").format(stanjePotrosnja, naKrajuMjeseca)
return calculation();
'''
class CalculatorApp(App):
def build(self):
return Screen()
CalculatorApp().run()
KV
<Screen>
Button:
text: "izracunaj"
答案 0 :(得分：0)
我修复了你的程序。当您按下按钮时，kv文件中添加的命令会触发计算，结果将被打印。
<强> main.py
# ASCII
asciicodes = [' ','!','"','#','$','%','&','','(',')','*','+',',','-','.','/',
'0','1','2','3','4','5','6','7','8','9',':',';','<','=','>','?','@',
'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q',
'r','s','t','u','v','w','x','y','z','[','\\',']','^','_']
# Braille symbols
brailles = ['⠀','⠮','⠐','⠼','⠫','⠩','⠯','⠄','⠷','⠾','⠡','⠬','⠠','⠤','⠨','⠌','⠴','⠂','⠆','⠒','⠲','⠢',
'⠖','⠶','⠦','⠔','⠱','⠰','⠣','⠿','⠜','⠹','⠈','⠁','⠃','⠉','⠙','⠑','⠋','⠛','⠓','⠊','⠚','⠅',
'⠇','⠍','⠝','⠕','⠏','⠟','⠗','⠎','⠞','⠥','⠧','⠺','⠭','⠽','⠵','⠪','⠳','⠻','⠘','⠸']
<强> calculator.kv
import kivy
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.image import Image
from kivy.uix.label import Label
from kivy.uix.gridlayout import GridLayout
from kivy.uix.textinput import TextInput
class Screen(GridLayout):
def __init__(self, **kwargs):
super(Screen, self).__init__(**kwargs)
self.cols = 1
self.add_widget(Label(text="Koliko imas na racunu"))
self.stanjeNovaca = TextInput(multiline=False)
self.add_widget(self.stanjeNovaca)
self.add_widget(Label(text="Koliko dana do place"))
self.stanjeDani = TextInput(multiline=False)
self.add_widget(self.stanjeDani)
self.add_widget(Label(text="Koliko trosis na dan"))
self.stanjePotrosnja = TextInput(multiline=False)
self.add_widget(self.stanjePotrosnja)
def calculation(self):
svakiDanTrosis = float(self.stanjeDani.text) * float(self.stanjePotrosnja.text)
naKrajuMjeseca = float(self.stanjeNovaca.text) - svakiDanTrosis
print("Ako svaki dan trosis {}, na kraju mjeseca ce ti ostati {}".format(self.stanjePotrosnja.text, naKrajuMjeseca))
return naKrajuMjeseca
class CalculatorApp(App):
def build(self):
return Screen()
CalculatorApp().run()
如果您想在GUI中显示结果，只需在<Screen>
Button:
text: "izracunaj"
on_release: root.calculation()
中添加Widget（例如Label}并相应地设置其文字。
答案 1 :(得分：-2)
这个计算器在黑暗模式下看起来像 Windows 10 计算器
main.py(下)
from kivy.app import App
from kivy.uix.widget import Widget
from kivy.core.window import Window
from kivy.lang.builder import Builder
import re
Builder.load_file('./calculator.kv')
Window.size = (350, 550)
class CalculatorWidget(Widget):
# Clear the screen
def clear(self):
self.ids.input_box.text = "0"
# Remove the last character
def remove_last(self):
prev_number = self.ids.input_box.text
prev_number = prev_number[:-1]
self.ids.input_box.text = prev_number
# Getting the button value
def button_value(self, number):
prev_number = self.ids.input_box.text
if "wrong equation" in prev_number:
prev_number = ''
if prev_number == '0':
self.ids.input_box.text = ''
self.ids.input_box.text = f"{number}"
else:
self.ids.input_box.text = f"{prev_number}{number}"
# Getting the sings
def sings(self, sing):
prev_number = self.ids.input_box.text
self.ids.input_box.text = f"{prev_number}{sing}"
# Getting decimal value
def dot(self):
prev_number = self.ids.input_box.text
num_list = re.split("\+|\*|-|/|%", prev_number)
if ("+" in prev_number or "-" in prev_number or "*" in prev_number or "/" in prev_number or "%" in prev_number) and "." not in num_list[-1]:
prev_number = f"{prev_number}."
self.ids.input_box.text = prev_number
elif '.' in prev_number:
pass
else:
prev_number = f'{prev_number}.'
self.ids.input_box.text = prev_number
# Calculate the result
def results(self):
prev_number = self.ids.input_box.text
try:
result = eval(prev_number)
self.ids.input_box.text = str(result)
except:
self.ids.input_box.text = "wrong equation"
# Positive to negative
def positive_negative(self):
prev_number = self.ids.input_box.text
if "-" in prev_number:
self.ids.input_box.text = f"{prev_number.replace('-', '')}"
else:
self.ids.input_box.text = f"-{prev_number}"
class CalculatorApp(App):
def build(self):
return CalculatorWidget()
if __name__ == "__main__":
CalculatorApp().run()
以及.kv文件中的以下代码
<Button>
size_hint: (0.2, 0.2)
background_normal: ""
background_color: (0, 0, 0, 0)
<CalculatorWidget>
BoxLayout
orientation: "vertical"
size: root.width, root.height
TextInput:
id: input_box
text: "0"
font_size: 43
multiline: False
halign: "right"
size_hint: (1, 0.19)
background_color: (20/255, 20/255, 30/255, 1)
foreground_color: (1, 1, 1, 1)
GridLayout:
cols: 4
rows: 5
### Row 1 ####
Button:
text: "%"
font_size: 32
on_press: root.sings("%")
background_color: (14/255, 73/255, 176/255, 1)
Button:
text: "C"
font_size: 32
on_press: root.clear()
background_color: (14/255, 73/255, 176/255, 1)
Button:
text: u"\u00AB"
font_size: 32
on_press: root.remove_last()
background_color: (14/255, 73/255, 176/255, 1)
Button:
text: "/"
font_size: 32
background_color: (14/255, 73/255, 176/255, 1)
on_press: root.sings("/")
background_color: (14/255, 73/255, 176/255, 1)
#### Row 2 #####
Button:
text: "7"
font_size: 32
on_press: root.button_value(7)
Button:
text: "8"
font_size: 32
on_press: root.button_value(8)
Button:
text: "9"
font_size: 32
on_press: root.button_value(9)
Button:
text: "x"
font_size: 32
background_color: (14/255, 73/255, 176/255, 1)
on_press: root.sings("*")
#### Row 3 ###
Button:
text: "4"
font_size: 32
on_press: root.button_value(4)
Button:
text: "5"
font_size: 32
on_press: root.button_value(5)
Button:
text: "6"
font_size: 32
on_press: root.button_value(6)
Button:
text: "-"
font_size: 32
background_color: (14/255, 73/255, 176/255, 1)
on_press: root.sings("-")
### Row 4 ###
Button:
text: "1"
font_size: 32
on_press: root.button_value(1)
Button:
text: "2"
font_size: 32
on_press: root.button_value(2)
Button:
text: "3"
font_size: 32
on_press: root.button_value(3)
Button:
text: "+"
font_size: 32
background_color: (14/255, 73/255, 176/255, 1)
on_press: root.sings("+")
### Row 5 ###
Button:
text: "+/-"
font_size: 32
on_press: root.positive_negative()
Button:
text: "0"
font_size: 32
on_press: root.button_value(0)
Button:
text: "."
font_size: 32
on_press: root.dot()
Button:
text: "="
font_size: 32
background_color: (14/255, 73/255, 176/255, 1)
on_press: root.results()