<\/span><\/h2>\n\n\n\n\u5728Python\u4e2d\uff0ctry<\/code>\u548cexcept<\/code>\u662f\u5904\u7406\u9519\u8bef\u7684\u57fa\u672c\u6784\u9020\u3002\u5f53\u4f60\u9884\u89c1\u5230\u67d0\u6bb5\u4ee3\u7801\u53ef\u80fd\u4f1a\u51fa\u9519\u65f6\uff0c\u5c31\u628a\u5b83\u653e\u5728try<\/code>\u5757\u91cc\u3002<\/p>\n\n\n\ntry:
# \u5c1d\u8bd5\u6267\u884c\u7684\u4ee3\u7801\uff0c\u6bd4\u5982\u9664\u4ee5\u96f6<\/em>
result = 10 \/ 0
except ZeroDivisionError:
# \u5982\u679c\u53d1\u751f\u9664\u4ee5\u96f6\u9519\u8bef\uff0c\u6267\u884c\u8fd9\u91cc<\/em>
print(\"\u4e0d\u80fd\u9664\u4ee5\u96f6\u54e6\uff01\")<\/code><\/pre>\n\n\n\n<\/span>2. \u591a\u91cd\u5f02\u5e38\u6355\u83b7<\/strong><\/span><\/h2>\n\n\n\n\u4e00\u4e2aexcept<\/code>\u53ef\u4ee5\u6355\u83b7\u591a\u79cd\u7c7b\u578b\u7684\u9519\u8bef\uff0c\u6216\u8005\u4f60\u53ef\u4ee5\u4f7f\u7528\u591a\u4e2aexcept<\/code>\u5757\u3002<\/p>\n\n\n\ntry:
# \u53ef\u80fd\u4f1a\u629b\u51fa\u591a\u79cd\u9519\u8bef\u7684\u4ee3\u7801<\/em>
x = int(input(\"\u8bf7\u8f93\u5165\u4e00\u4e2a\u6570\u5b57\uff1a\"))
y = 10 \/ x
except ValueError:
print(\"\u8f93\u5165\u7684\u4e0d\u662f\u6570\u5b57\uff01\")
except ZeroDivisionError:
print(\"\u6570\u5b57\u4e0d\u80fd\u4e3a\u96f6\uff01\")<\/code><\/pre>\n\n\n\n<\/span>3. \u4f7f\u7528else\u548cfinally<\/strong><\/span><\/h2>\n\n\n\n\nelse<\/code>\u5757\u5728\u6ca1\u6709\u5f02\u5e38\u53d1\u751f\u65f6\u6267\u884c\u3002<\/li>\n\n\n\nfinally<\/code>\u65e0\u8bba\u662f\u5426\u53d1\u751f\u5f02\u5e38\u90fd\u4f1a\u6267\u884c\uff0c\u5e38\u7528\u4e8e\u8d44\u6e90\u6e05\u7406\u3002<\/li>\n<\/ul>\n\n\n\ntry:
num = 5
except ValueError:
print(\"\u9519\u8bef\u7684\u503c\u3002\")
else:
print(f\"\u6570\u5b57\u662f\uff1a{num}\")
finally:
print(\"\u8fd9\u662f\u6700\u540e\u7684\u64cd\u4f5c\uff0c\u603b\u4f1a\u6267\u884c\u3002\")<\/code><\/pre>\n\n\n\n<\/span>4. \u6355\u83b7\u6240\u6709\u5f02\u5e38<\/strong><\/span><\/h2>\n\n\n\n\u4f7f\u7528Exception<\/code>\u4f5c\u4e3aexcept\u7684\u53c2\u6570\u53ef\u4ee5\u6355\u83b7\u6240\u6709\u975e\u7cfb\u7edf\u9000\u51fa\u5f02\u5e38\u3002<\/p>\n\n\n\ntry:
# \u53ef\u80fd\u51fa\u9519\u7684\u4ee3\u7801<\/em>
open(\"\u4e0d\u5b58\u5728\u7684\u6587\u4ef6.txt\")
except Exception as e:
print(f\"\u9047\u5230\u4e86\u95ee\u9898\uff1a{e}\")<\/code><\/pre>\n\n\n\n<\/span>5. \u81ea\u5b9a\u4e49\u5f02\u5e38<\/strong><\/span><\/h2>\n\n\n\nPython\u5141\u8bb8\u4f60\u521b\u5efa\u81ea\u5df1\u7684\u5f02\u5e38\u7c7b\uff0c\u7ee7\u627f\u81eaException<\/code>\u6216\u5176\u5b50\u7c7b\u3002<\/p>\n\n\n\nclass CustomError(Exception):
pass
try:
raise CustomError(\"\u8fd9\u662f\u4e00\u4e2a\u81ea\u5b9a\u4e49\u9519\u8bef\u3002\")
except CustomError as ce:
print(ce)<\/code><\/pre>\n\n\n\n<\/span>6. \u5f02\u5e38\u94fe<\/strong><\/span><\/h2>\n\n\n\n\u5f53\u4e00\u4e2a\u5f02\u5e38\u88ab\u53e6\u4e00\u4e2a\u5f02\u5e38\u6355\u83b7\u65f6\uff0c\u53ef\u4ee5\u901a\u8fc7from<\/code>\u4fdd\u7559\u539f\u59cb\u5f02\u5e38\u4fe1\u606f\u3002<\/p>\n\n\n\ntry:
raise ValueError(\"\u9519\u8bef\u503c\")
except ValueError as ve:
raise KeyError(\"\u952e\u9519\u8bef\") from ve<\/code><\/pre>\n\n\n\n<\/span>7. \u65e5\u5fd7\u8bb0\u5f55\u5165\u95e8<\/strong><\/span><\/h2>\n\n\n\n\u4f7f\u7528logging<\/code>\u6a21\u5757\u6765\u8bb0\u5f55\u9519\u8bef\u548c\u5176\u4ed6\u4fe1\u606f\uff0c\u8fd9\u662f\u6bd4\u6253\u5370\u66f4\u4e13\u4e1a\u7684\u505a\u6cd5\u3002<\/p>\n\n\n\nimport logging
logging.basicConfig(filename='app.log', level=logging.INFO)
try:
# \u6f5c\u5728\u7684\u9519\u8bef\u4ee3\u7801<\/em>
...
except Exception as e:
logging.error(\"\u53d1\u751f\u4e86\u4e00\u4e2a\u9519\u8bef\uff1a%s\", e)<\/code><\/pre>\n\n\n\n<\/span>8. \u65e5\u5fd7\u7ea7\u522b<\/strong><\/span><\/h2>\n\n\n\n\u4e86\u89e3\u5e76\u4f7f\u7528\u4e0d\u540c\u7684\u65e5\u5fd7\u7ea7\u522b\uff08DEBUG, INFO, WARNING, ERROR, CRITICAL\uff09\u6765\u7cbe\u786e\u63a7\u5236\u65e5\u5fd7\u4fe1\u606f\u3002<\/p>\n\n\n\n
<\/span>9. \u683c\u5f0f\u5316\u65e5\u5fd7<\/strong><\/span><\/h2>\n\n\n\n\u5b9a\u5236\u65e5\u5fd7\u7684\u8f93\u51fa\u683c\u5f0f\uff0c\u8ba9\u5b83\u66f4\u6613\u8bfb\u3002<\/p>\n\n\n\n
logging.basicConfig(format='%(asctime)s - %(levelname)s - %(message)s', level=logging.INFO)<\/code><\/pre>\n\n\n\n<\/span>10. \u591a\u7ebf\u7a0b\u65e5\u5fd7<\/strong><\/span><\/h2>\n\n\n\n\u5728\u591a\u7ebf\u7a0b\u73af\u5883\u4e2d\u786e\u4fdd\u65e5\u5fd7\u7684\u6b63\u786e\u8bb0\u5f55\uff0c\u53ef\u80fd\u9700\u8981\u8003\u8651\u65e5\u5fd7\u9501\u3002<\/p>\n\n\n\n
<\/span>11. \u5f02\u5e38\u4e0a\u4e0b\u6587\u4fe1\u606f<\/strong><\/span><\/h2>\n\n\n\n\u5229\u7528__cause__<\/code>\u5c5e\u6027\u67e5\u770b\u5f02\u5e38\u7684\u56e0\u679c\u5173\u7cfb\u94fe\u3002<\/p>\n\n\n\ntry:
try:
raise ValueError(\"First error.\")
except Exception as inner:
raise KeyError(\"Second error.\") from inner
except Exception as outer:
print(outer.__cause__)<\/code><\/pre>\n\n\n\n<\/span>12. \u5b9e\u8df5\u6280\u5de7\uff1a\u7f16\u5199\u5065\u58ee\u7684\u8f93\u5165\u9a8c\u8bc1<\/strong><\/span><\/h2>\n\n\n\n\u5728\u5904\u7406\u7528\u6237\u8f93\u5165\u65f6\uff0c\u603b\u662f\u5148\u9a8c\u8bc1\uff0c\u540e\u4f7f\u7528\u3002<\/p>\n\n\n\n
<\/span>13. \u7ec3\u4e60\u5efa\u8bae\uff1a\u6a21\u62df\u9519\u8bef\u573a\u666f<\/strong><\/span><\/h2>\n\n\n\n\u81ea\u5df1\u8bbe\u8ba1\u4e00\u4e9b\u9519\u8bef\u573a\u666f\uff0c\u7ec3\u4e60\u5f02\u5e38\u6355\u83b7\u548c\u65e5\u5fd7\u8bb0\u5f55\u3002<\/p>\n\n\n\n
<\/span>14. \u6ce8\u610f\u4e8b\u9879\uff1a\u907f\u514d\u8fc7\u5ea6\u6355\u83b7<\/strong><\/span><\/h2>\n\n\n\n\u7cbe\u786e\u5730\u6355\u83b7\u4f60\u9700\u8981\u5904\u7406\u7684\u5f02\u5e38\uff0c\u800c\u4e0d\u662f\u4e00\u7f51\u6253\u5c3d\uff0c\u8fd9\u6837\u53ef\u4ee5\u66f4\u597d\u5730\u5b9a\u4f4d\u95ee\u9898\u3002<\/p>\n\n\n\n
<\/span>15. \u9ad8\u7ea7\u6280\u5de7\uff1a\u4f7f\u7528contextlib<\/code>\u7ba1\u7406\u8d44\u6e90<\/strong><\/span><\/h2>\n\n\n\nwith<\/code>\u8bed\u53e5\u548ccontextlib<\/code>\u6a21\u5757\u53ef\u4ee5\u81ea\u52a8\u7ba1\u7406\u8d44\u6e90\uff0c\u51cf\u5c11finally<\/code>\u7684\u9700\u8981\u3002<\/p>\n\n\n\nfrom contextlib import closing
import sqlite3
with closing(sqlite3.connect(\"my_database.db\")) as conn:
# \u6267\u884c\u6570\u636e\u5e93\u64cd\u4f5c<\/em>
pass
# \u8fde\u63a5\u81ea\u52a8\u5173\u95ed<\/em><\/code><\/pre>\n\n\n\n<\/span>\u6df1\u5165\u7406\u89e3\uff1a\u5f02\u5e38\u5bf9\u8c61\u7684\u4f7f\u7528\u4e0e\u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406<\/strong><\/span><\/h2>\n\n\n\n\u5728\u6df1\u5165\u5b66\u4e60\u4e4b\u524d\uff0c\u6211\u4eec\u5df2\u7ecf\u89e6\u53ca\u4e86\u5f02\u5e38\u5904\u7406\u548c\u65e5\u5fd7\u8bb0\u5f55\u7684\u57fa\u7840\uff0c\u73b0\u5728\u8ba9\u6211\u4eec\u8fdb\u4e00\u6b65\u63a2\u7d22\uff0c\u89e3\u9501\u66f4\u9ad8\u7ea7\u7684\u5b9e\u8df5\u6280\u5de7\u3002<\/p>\n\n\n\n
<\/span>16. \u5f02\u5e38\u5bf9\u8c61\u7684\u8be6\u7ec6\u4fe1\u606f<\/strong><\/span><\/h2>\n\n\n\n\u6355\u83b7\u5f02\u5e38\u65f6\uff0c\u4f60\u53ef\u4ee5\u8bbf\u95ee\u5f02\u5e38\u5bf9\u8c61\u7684\u5c5e\u6027\u6765\u83b7\u53d6\u66f4\u591a\u4fe1\u606f\uff0c\u6bd4\u5982\u4f7f\u7528str(e)<\/code>\u6216repr(e)<\/code>\u67e5\u770b\u5f02\u5e38\u7684\u8be6\u7ec6\u4fe1\u606f\u3002<\/p>\n\n\n\ntry:
# \u5f15\u53d1\u5f02\u5e38\u7684\u4ee3\u7801<\/em>
raise ValueError(\"\u6f14\u793a\u9519\u8bef\")
except ValueError as e:
print(\"\u9519\u8bef\u8be6\u60c5:\", str(e))<\/code><\/pre>\n\n\n\n<\/span>17. \u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406\u5668<\/strong><\/span><\/h2>\n\n\n\n\u9664\u4e86\u4f7f\u7528\u9ed8\u8ba4\u7684\u65e5\u5fd7\u5904\u7406\u5668\uff0c\u4f60\u8fd8\u53ef\u4ee5\u81ea\u5b9a\u4e49\u65e5\u5fd7\u5904\u7406\u903b\u8f91\uff0c\u6bd4\u5982\u53d1\u9001\u90ae\u4ef6\u901a\u77e5\u3002<\/p>\n\n\n\n
import logging
import smtplib
class EmailHandler(logging.Handler):
def emit(self, record):
log_entry = self.format(record)
# \u5728\u8fd9\u91cc\u6dfb\u52a0\u53d1\u9001\u90ae\u4ef6\u7684\u903b\u8f91<\/em>
print(\"\u6a21\u62df\u53d1\u9001\u90ae\u4ef6:\", log_entry) # \u5b9e\u9645\u5e94\u7528\u4e2d\u66ff\u6362\u4e3a\u53d1\u9001\u90ae\u4ef6\u7684\u4ee3\u7801<\/em>
logger = logging.getLogger(__name__)
email_handler = EmailHandler()
email_handler.setLevel(logging.ERROR)
formatter = logging.Formatter('%(asctime)s - %(levelname)s - %(message)s')
email_handler.setFormatter(formatter)
logger.addHandler(email_handler)
logger.error(\"\u8fd9\u5e94\u8be5\u89e6\u53d1\u4e00\u5c01\u90ae\u4ef6\u901a\u77e5\u3002\")<\/code><\/pre>\n\n\n\n