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!
Among the actives, Ascendas REIT sank 0.64 percent, while CapitaLand Integrated Commercial Trust plummeted 1.42 percent, City Developments plunged 1.12 percent, Dairy Farm International tumbled 0.86 percent, DBS Group skidded 0.68 percent, Genting Singapore retreated 0.67 percent, Hongkong Land climbed 1.30 percent, Mapletree Commercial Trust lost 0.47 percent, Mapletree Logistics Trust tanked 0.95 percent, Oversea-Chinese Banking Corporation dropped 0.61 percent, SATS rose 0.24 percent, SembCorp Industries shed 0.54 percent, Singapore Airlines surrendered 0.79 percent, Singapore Exchange slid 0.30 percent, Singapore Press Holdings declined 1.03 percent, Singapore Technologies Engineering dipped 0.26 percent, SingTel advanced 0.81 percent, United Overseas Bank fell 0.39 percent, Wilmar International eased 0.24 percent, Yangzijiang Shipbuilding jumped 1.42 percent and Keppel Corp, Thai Beverage, CapitaLand and Comfort DelGro were unchanged.
Telegram hopes to raise $1bn with a convertible bond private placement
The super secure UAE-based Telegram messenger service, developed by Russian-born software icon Pavel Durov, is looking to raise $1bn through a bond placement to a limited number of investors from Russia, Europe, Asia and the Middle East, the Kommersant daily reported citing unnamed sources on February 18, 2021.The issue reportedly comprises exchange bonds that could be converted into equity in the messaging service that is currently 100% owned by Durov and his brother Nikolai.Kommersant reports that the price of the conversion would be at a 10% discount to a potential IPO should it happen within five years.The minimum bond placement is said to be set at $50mn, but could be lowered to $10mn. Five-year bonds could carry an annual coupon of 7-8%.
