我正在制作一个生成票证的应用程序。生成脚本已经完成。
当我按下按钮“Genera”(英文为“Generate”)时，它应该打印生成的票据(目前在终端中)。
它全部运行但是当我按下生成按钮时我得到这个错误:
AttributeError: StockholmTicket instance has no call method
我不知道如何在 gen_btn 新闻上调用 StockholmTicket，非常感谢任何帮助。
代码如下:
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
from datetime import datetime, timedelta
import random
class Fejkbiljett(App):
def build(self):
gen_btn = Button(text='Generera',
size_hint=(.90, .10),
pos=(5, 5),
font_size=21)
gen_btn.bind(on_press=StockholmTicket())
l = BoxLayout()
l.add_widget(gen_btn)
return l
class StockholmTicket():
def getMessage():
# gNumbers
gNumbers = random.randint(100, 999)
gNumbers = str(gNumbers)
gLetters = 'EAOXE'
gLetters = gLetters * 2
gLetters = ''.join(random.sample(gLetters, len(gLetters)))
gLetters2 = 'EAOXA'
gLetters2 = gLetters2 * 2
gLetters2 = ''.join(random.sample(gLetters2, len(gLetters2)))
gLetters3 = 'EAOXA'
gLetters3 = gLetters3 * 2
gLetters3 = ''.join(random.sample(gLetters3, len(gLetters3)))
sCode = '123456789123456'
sCode = ''.join(random.sample(sCode, len(sCode)))
sCode = sCode[:6] + ' ' + sCode[6:]
iPrice = '20'
sPriceText = 'Red pris'
sPricetype = 'R'
mZones = 'A'
mTime = datetime.now()
mTime = mTime + timedelta(hours=1, minutes=15)
mTime = str(mTime)
mTime = mTime[11:16]
mDate = str(datetime.now())
mDate = mDate[:10]
print((sPricetype + "-" + mZones + " " + mTime + " "
+ gNumbers + "\n\n"
+ gLetters + "\n"
+ gLetters2 + "\n"
+ gLetters3 + "\n"
+ "EEEEEEEEEE\n\n"
+ "SL biljett giltig till " + mTime + ", " + "\n" + mDate + "\n"
+ sPriceText + " " + iPrice + " kr ink 6% moms\n"
+ sCode + "\n"
+ "m.sl.se"))
getMessage()
if __name__ == "__main__":
Fejkbiljett().run()
请您参考如下方法:
不确定为什么(我猜是他定义类的方式)，但是当调用不属于您正在绑定(bind)的同一类的方法时它不起作用。您可以在类中创建一个方法，然后在另一个类中调用该方法。像这样:
from kivy.app import App
from kivy.uix.button import Button
from kivy.uix.boxlayout import BoxLayout
class Fejkbiljett(App):
def build(self):
self.gen_btn = Button(text='Generera',
size_hint=(.90, .10),
pos=(5, 5),
font_size=21)
self.gen_btn.bind(on_press=self.getMessageFejkbiljett)
l = BoxLayout()
l.add_widget(self.gen_btn)
return l
def getMessageFejkbiljett(self, *args):
print "1. this is called on the method getMessageFejkbiljett of Fejkbiljett"
st = StockholmTicket()
st.getMessage(self)
class StockholmTicket():
def getMessage(self, source):
source.gen_btn.text = "the event was called"
print "2. this is called on the method getMessage of StockholmTicket"
if __name__ == "__main__":
Fejkbiljett().run()
