# Trigger a warning. fxn2() # Verify some things assert len(w) == 1 assert issubclass(w[-1].category, DeprecationWarning) assert "deprecated" in str(w[-1].message)可以从命令行通过传递 -Wd 参数到解释器（即为 -W default 的速记）。这将为所有警告启用默认处理，包括默认情况...
warnings.warn(message, category=None, stacklevel=1, source=None) 触发异常。category 参数默认为 UserWarning。message 参数为警告消息,可以是 Warning 实例,在这种情况下,将忽略 category 并使用 message.class,消息文本则为 str(message)。 warn_explicit warnings.warn_explicit(message, category, filename, line...
BytesWarning | 与字节和bytearray相关的警告的基类别。ResourceWarning | 与资源使用相关的警告的基类别。 示例 # -*- coding: utf-8 -*-import warningsdef foo():warnings.warn("Deprecated", DeprecationWarning)if __name__ == '__main__':foo() 过滤警告 方法 warnings.filterwarnings(action,message =...
我们可以使用正则表达式来匹配警告类名或警告信息。 importwarnings# 忽略特定类型的警告warnings.filterwarnings("ignore",category=DeprecationWarning)# 忽略特定警告信息warnings.filterwarnings("ignore",message="deprecated") 1. 2. 3. 4. 5. 6. 7. 警告状态图 下面是一个使用mermaid语法标识的警告状态图。 Enab...
代码语言:javascript 代码运行次数:0 运行 AI代码解释 importwarnings defdo_warning():warnings.warn("deprecated",DeprecationWarning)withwarnings.catch_warnings(record=True)asw:do_warning()iflen(w)>0:print(w[0].message) 运行后,效果如下
warnings.warn("Deprecated", DeprecationWarning) if __name__ == '__main__': foo() 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 过滤警告 方法 warnings.filterwarnings(action,message ='',category = Warning, module='',lineno = 0,append = False) ...
warnings.catch_warnings(record=True) as w: # Cause all warnings to always be triggered. warnings.simplefilter("always") # Trigger a warning. fxn2() # Verify some things assert len(w) == 1 assert issubclass(w[-1].category, DeprecationWarning) assert "deprecated" in str(w[-1].message)...
with warnings.catch_warnings(record=True) as w:#Cause all warnings to always be triggered.warnings.simplefilter("always")#Trigger a warning.fxn2()#Verify some thingsassertlen(w) == 1assertissubclass(w[-1].category, DeprecationWarning)assert"deprecated"instr(w[-1].message) ...
filterwarnings('error') try: warnings.warn("deprecated", DeprecationWarning) except Warning as e: print(e) 运行后,效果如下: 4. 捕获警告方法二 如果你不想对在代码中去配置将警告转成异常。 import warnings try: warnings.warn("deprecated", DeprecationWarning) except Warning as e: print(e) 可以在...
",DeprecationWarning)withwarnings.catch_warnings(record=True)asw:# Cause all warnings to always be triggered.warnings.simplefilter("always")# Trigger a warning.fxn()# Verify some things assertlen(w)==1assertissubclass(w[-1].category,DeprecationWarning)assert"deprecated"instr(w[-1].message)...