Начиная с Python 3.0, при возникновении нового исключения внутри блока except перехваченное исключение автоматически сохраняется в атрибуте __context__ создаваемого исключения. В результате при выводе будут показаны оба исключения:
(most recent call last): File "test.py", line 2, in <module> 1 / 0 ZeroDivisionError: division by zero
During handling of the above exception, another exception occurred:
Traceback (most recent call last): File "test.py", line 4, in <module> raise ValueError('Zero!') ValueError: Zero!
Кроме того, вы можете явно указать причинное исключение, использовав конструкцию raise … from. Тогда в атрибут __cause__ нового исключения будет помещено исходное:
division_error = None
try: 1 / 0 except ZeroDivisionError as e: division_error = e
raise ValueError('Zero!') from division_error
(most recent call last): File "test.py", line 4, in <module> 1 / 0 ZeroDivisionError: division by zero
The above exception was the direct cause of the following exception:
Traceback (most recent call last): File "test.py", line 8, in <module> raise ValueError('Zero!') from division_error ValueError: Zero!
Начиная с Python 3.0, при возникновении нового исключения внутри блока except перехваченное исключение автоматически сохраняется в атрибуте __context__ создаваемого исключения. В результате при выводе будут показаны оба исключения:
(most recent call last): File "test.py", line 2, in <module> 1 / 0 ZeroDivisionError: division by zero
During handling of the above exception, another exception occurred:
Traceback (most recent call last): File "test.py", line 4, in <module> raise ValueError('Zero!') ValueError: Zero!
Кроме того, вы можете явно указать причинное исключение, использовав конструкцию raise … from. Тогда в атрибут __cause__ нового исключения будет помещено исходное:
division_error = None
try: 1 / 0 except ZeroDivisionError as e: division_error = e
raise ValueError('Zero!') from division_error
(most recent call last): File "test.py", line 4, in <module> 1 / 0 ZeroDivisionError: division by zero
The above exception was the direct cause of the following exception:
Traceback (most recent call last): File "test.py", line 8, in <module> raise ValueError('Zero!') from division_error ValueError: Zero!
The lead from Wall Street offers little clarity as the major averages opened lower on Friday and then bounced back and forth across the unchanged line, finally finishing mixed and little changed.The Dow added 33.18 points or 0.10 percent to finish at 34,798.00, while the NASDAQ eased 4.54 points or 0.03 percent to close at 15,047.70 and the S&P 500 rose 6.50 points or 0.15 percent to end at 4,455.48. For the week, the Dow rose 0.6 percent, the NASDAQ added 0.1 percent and the S&P gained 0.5 percent.The lackluster performance on Wall Street came on uncertainty about the outlook for the markets following recent volatility.
Telegram Be The Next Best SPAC
I have no inside knowledge of a potential stock listing of the popular anti-Whatsapp messaging app, Telegram. But I know this much, judging by most people I talk to, especially crypto investors, if Telegram ever went public, people would gobble it up. I know I would. I’m waiting for it. So is Sergei Sergienko, who claims he owns $800,000 of Telegram’s pre-initial coin offering (ICO) tokens. “If Telegram does a SPAC IPO, there would be demand for this issue. It would probably outstrip the interest we saw during the ICO. Why? Because as of right now Telegram looks like a liberal application that can accept anyone - right after WhatsApp and others have turn on the censorship,” he says.
