Python 异常处理

python中使用try-except代码块处理可能引发的异常。

下面是简单的示例：

try:
	print(5/0)
except ZeroDivisionError:
	print("You can't divide by zero!")

结果输出：

You can't divide by zero!

使用异常避免崩溃：

print("Give me two numbers,and I'll divide them.")
print("Enter 'q' to quit.")
while True:
	first_number = input("\nFirst number:")
	if first_number == 'q':
		break;
	second_number = input("\nSecond number:")
	if second_number == 'q':
		break
	try:
		answer = int(first_number) / int(second_number)
	except ZeroDivisionError:
		print("You can't divide by 0!")
	else:
		print(answer)