Python 为JSONDecodeError编写循环/异常
我试图构建一个程序,在Tkinter GUI中打印JSON结果,但我遇到了以下问题: 如果发布的图像足够清晰,可以得到结果怎么办 我知道我可以使用if、else循环或异常,但我无法得到我想要的GUI结果,该GUI告诉用户如果发生错误,就会出现错误 我在终端中遇到的错误是:Python 为JSONDecodeError编写循环/异常,python,json,loops,exception,jsondecoder,Python,Json,Loops,Exception,Jsondecoder,我试图构建一个程序,在Tkinter GUI中打印JSON结果,但我遇到了以下问题: 如果发布的图像足够清晰,可以得到结果怎么办 我知道我可以使用if、else循环或异常,但我无法得到我想要的GUI结果,该GUI告诉用户如果发生错误,就会出现错误 我在终端中遇到的错误是: File "/usr/lib/python3.7/json/__init__.py", line 348, in loads return _default_decoder.decode(s) File "/usr/lib/p
File "/usr/lib/python3.7/json/__init__.py", line 348, in loads
return _default_decoder.decode(s)
File "/usr/lib/python3.7/json/decoder.py", line 337, in decode
obj, end = self.raw_decode(s, idx=_w(s, 0).end())
File "/usr/lib/python3.7/json/decoder.py", line 355, in raw_decode
raise JSONDecodeError("Expecting value", s, err.value) from None
json.decoder.JSONDecodeError: Expecting value: line 1 column 1 (char 0)
到目前为止,我的代码是:
if: json.decoder.JSONDecodeError:
oops = tk.Tk()
window_width = oops.winfo_reqwidth()
window_height = oops.winfo_reqheight()
# Gets both half the screen width/height and window width/height
position_right = int(oops.winfo_screenwidth()/2 - window_width/2)
position_down = int(oops.winfo_screenheight()/2 - window_height/2)
# Positions the window in the center of the page.
oops.geometry("+{}+{}".format(position_right, position_down))
main = tk.Label(oops, text='Oops, your Photo could not be analyzed!', font='Verdana 70 bold').pack()
oops.after(5000, oops.destroy)
else:
write = file.write(data)
pretty_json = json.loads(data)
print(pretty_json)
我尝试过一次,除了这样的例外,也没有得到我想要的结果:
try:
write = file.write(data)
pretty_json = json.loads(data)
print(pretty_json)
except json.JSONDecodeError:
oops = tk.Tk()
window_width = oops.winfo_reqwidth()
window_height = oops.winfo_reqheight()
# Gets both half the screen width/height and window width/height
position_right = int(oops.winfo_screenwidth()/2 - window_width/2)
position_down = int(oops.winfo_screenheight()/2 - window_height/2)
# Positions the window in the center of the page.
oops.geometry("+{}+{}".format(position_right, position_down))
main = tk.Label(oops, text='Oops, your Photo could not be nalyzed!', font='Verdana 70 bold').pack()
任何帮助都将不胜感激,谢谢 这段代码解决了我的问题:我需要在以后打印结果时在脚本中添加一个异常 此外,我愚蠢地忘记添加
mainloop
行
try:
global name
name = date_time + "_result.json"
file = open(name, 'wb')
global data
data = response.content
write = file.write(data)
pretty_json = json.loads(data)
print(pretty_json)
except JSONDecodeError:
oops = tk.Tk()
window_width = oops.winfo_reqwidth()
window_height = oops.winfo_reqheight()
# Gets both half the screen width/height and window width/height
position_right = int(window_width/2)
position_down = int(window_height/2)
# Positions the window in the center of the page.
oops.geometry("+{}+{}".format(position_right, position_down))
main = tk.Label(oops, text='Oops!', font='Verdana 80 bold').pack()
detail = tk.Label(oops, text='Your Photo could not be analyzed', font='Verdana 60').pack()
oops.after(5000, oops.destroy)
oops.mainloop()