Python的try-except结构是程序健壮性的重要保障。其核心用法体现在三个层面: 精准捕获异常 通过指定具体异常类型,可实现针对性错误处理: try: file = open('data.txt') except FileNotFoundError: # 专门处理文件未找到的情况 print('文件不存在,请检查路径') except PermissionError: #...
name == "BBBBB AssertionError #报断言异常错误 3. 正则化、替换异常值 代码语言:javascript 代码运行次数:0 运行 AI代码解释 #输出结果整合: import json from pprint import pprint import json import pandas as pd enddate=timeUtils().getAnyDay(-1) input_path= result_path = output_path = def get...
The plain try-except block will catch any type of error. But, we can be more specific. For instance, we may be interested in only a particular type of error or want to handle different types of error differently. The type of error can be specified with the except statement. Consider the...
section Except Handle any raised exceptions code section Finally Clean up resources code 结语 在Python中,异常处理是一种非常有用的机制,可以帮助我们管理和处理程序中的错误情况。通过合理地使用try-except语句,我们可以使程序更加健壮和稳定。同时,打印异常信息也有助于我们更好地理解问题所在。希望本文能够帮助您...
try:# 可能引发异常的代码exceptExceptionType:# 处理异常logging.error('An error occurred.')raise# 重新抛出异常,保持原始堆栈跟踪信息 自定义异常: 如前所述,Python允许开发者自定义异常类,以便更好地符合应用程序的需求: classCustomError(Exception):def__init__(self, message):self.message = messagesuper(...
See more Error types in ourPython Built-in Exceptions Reference. Else You can use theelsekeyword to define a block of code to be executed if no errors were raised: Example In this example, thetryblock does not generate any error:
AssertionError #报断言异常错误 3. 正则化、替换异常值 #输出结果整合:importjsonfrompprintimportpprintimportjsonimportpandasaspd enddate=timeUtils().getAnyDay(-1) input_path= result_path = output_path =defget_textLine(path): string_list = [] ...
Read theZen of Python, understanding that there are principles that are in tension, and be wary of dogma that relies too heavily on any one of the statements in it.阅读Python的Zen,了解其中存在一些紧绷的原则,并且要警惕过于依赖其中任何一种陈述的教条。
The 'else' block runs only if the ‘try’ block executes successfully without any exceptions. It's useful for code that should run only when no errors occur.Example 5: 'finally' BlockIn this example, we attempt to open a non-existent file, raising a 'FileNotFoundError'. The 'finally'...
python中except⽤法_Python中except⽤法和作⽤ Python的except⽤来捕获所有异常, 因为Python⾥⾯的每次错误都会抛出 ⼀个异常,所以每个程序的错误都被当作⼀个运⾏时错误。 以下是使⽤except的⼀个例⼦: try: foo = opne(”file”) #open被错写为opne except: sys.exit(”could not open fi...