python - 处理连接异常（requests.exceptions.ConnectionError）

Question

I have a script that is running fine until it throws a connection exception and stops the whole program. How can I deal with (ignore) this exception? As you can probably tell I have never dealt with this kind of thing in Python before

Answer 1

It sounds to me like you want to implement a try/except block. RealPython has a good tutorial on handling exceptions gracefully but the basic structure is as follows:

try:
   # some code that may produce an exception
except: # this will catch any exceptions, which is generally bad practice
   # code to execute ONLY if there is an exception
else:
   # code to execute ONLY if there is NOT an exception
finally:
   # code to run regardless, often used for clean up

Only the try and except blocks are necessary; the else and finally blocks are optional. As I mentioned above, it is typically bad practice to catch all errors by just using the except keyword. Instead, you want to catch specific errors like in the following example:

from requests.exceptions import ConnectionError
try:
   # some code that may produce an exception
except ConnectionError: # this will only catch ConnectionErrors
   # code to execute ONLY if there is a ConnectionError
else:
   # code to execute ONLY if there is NOT a ConnectionError
finally:
   # code to run regardless, often used for clean up