Python Tkinter TypeError:'int'对象不可调用
我想从main.py获取用户输入,然后使用该信息在runAnalytics上产生输出。我遇到的问题是,有时,当dividen_yield不可用时,用户输入的值将为None(可能为null,我不知道),然后我的整个程序将停止。尽管有股息收益,但它完美地工作。Python Tkinter TypeError:'int'对象不可调用
main.py
import runAnalytics
from tkinter import *
import os
import centerWindow
loadApplication = Tk()
loadApplication.title("Stock Analytics")
loadApplication.geometry("1080x720")
label1 = Label(loadApplication, text = "Ticker")
input1 = Entry(loadApplication)
loadAnalytics = Button(loadApplication, text = "Load Analytics", command=lambda: runAnalytics.run(input1))
centerWindow.center(loadApplication)
label1.pack()
input1.pack()
loadAnalytics.pack()
loadApplication.mainloop()
runAnalytics.py
from yahoo_finance import Share
from tkinter import *
import os
import centerWindow
def run(input1):
ticker = Share(input1.get())
loadAnalytics = Tk()
loadAnalytics.title("$" + "ticker" + "Data")
loadAnalytics.geometry("1080x720")
centerWindow.center(loadAnalytics)
ticker.refresh()
if ticker.get_dividend_yield() is None:
ticker.get_dividend_yield == 0
share_price = Label(loadAnalytics, text = "Share Price: " + ticker.get_price()).pack()
prev_open = Label(loadAnalytics, text = "Previous Open: " + ticker.get_open()).pack()
prev_close = Label(loadAnalytics, text = "Previous CLose: " + ticker.get_prev_close()).pack()
dividend_yield = Label(loadAnalytics, text = "Dividend Yield: " + ticker.get_dividend_yield()).pack()
year_low = Label(loadAnalytics, text = "52 Week Low: " + ticker.get_year_low()).pack()
year_high = Label(loadAnalytics, text = "52 Week High: " + ticker.get_year_high()).pack()
volume = Label(loadAnalytics, text = "Volume: " + ticker.get_volume()).pack()
loadAnalytics.mainloop()
[错误]
Exception in Tkinter callback Traceback (most recent call last): File "C:\Users\MyName\AppData\Local\Programs\Python\Python35-32\lib\tkinter__init__.py", line 1550, in call return self.func(*args) File "C:\Users\MyName\Documents\Python Projects\DataAnalytics\main.py", line 13, in loadAnalytics = Button(loadApplication, text = "Load Analytics", command=lambda: runAnalytics.run(input1)) File "C:\Users\MyName\Documents\Python Projects\DataAnalytics\runAnalytics.py", line 21, in run dividend_yield = Label(loadAnalytics, text = "Dividend Yield: " + ticker.get_dividend_yield()).pack() TypeError: 'int' object is not callable
我试图执行代码,并得到了不同的错误比你有:
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.4/lib/python3.4/tkinter/__init__.py", line 1533, in __call__
return self.func(*args)
File "./main.py", line 15, in <lambda>
loadAnalytics = Button(loadApplication, text = "Load Analytics", command=lambda: runAnalytics.run(input1))
File "/Users/Sven/temp/stackexchange/python/runAnalytics.py", line 22, in run
dividend_yield = Label(loadAnalytics, text = "Dividend Yield: " + ticker.get_dividend_yield()).pack()
TypeError: Can't convert 'NoneType' object to str implicitly
所以我无法重现你得到了追踪,但我使用Python的Format Specification Mini-Language捐赠(双行缩进的片段直接复制和粘贴)改变了你的Label
声明中runAnalytics.py
文件:
share_price = Label(loadAnalytics,text='Share Price: {}'.format(ticker.get_price())).pack()
prev_open = Label(loadAnalytics,text='Previous Open: {}'.format(ticker.get_open())).pack()
prev_close = Label(loadAnalytics,text='Previous CLose: {}'.format(ticker.get_prev_close())).pack()
dividend_yield = Label(loadAnalytics,text='Dividend Yield: {}'.format(ticker.get_dividend_yield())).pack()
year_low = Label(loadAnalytics,text='52 Week Low: {}'.format(ticker.get_year_low())).pack()
year_high = Label(loadAnalytics,text='52 Week High: {}'.format(ticker.get_year_high())).pack()
volume = Label(loadAnalytics,text='Volume: {}'.format(ticker.get_volume())).pack()
这使得代码可运行没有任何错误,我的系统上,因为.format()
声明确实必要时所有类型转换为所需的字符串输出:
注意,没有在标签的文本中的小错字,我没修好(CLose
应该Close
)
太感谢你了,那完美无缺。如果你不介意我问,为什么添加.format工作?这样做是不同的编译方式? – Andrew
另外,我再次运行它,但删除了括号“{}”,它执行但没有出现。为什么需要括号?对不起,我只是好奇。 – Andrew
括号是要填充到字符串中的变量的占位符。你也可以计算或命名那些非常好的占位符,当你将一个以上的变量传递给一个字符串时,事情可能会变得有点混乱(看看文档)。不幸的是,我不完全确定格式迷你语言是如何工作的。然而,正式的规范可以在[PEP 3101](https://www.python.org/dev/peps/pep-3101/) – albert