在Python中处理 OSError 异常

让我们看看如何在Python中处理 OSError 异常。 OSError是Python中的内置异常，用作os模块的错误类，当特定于 os 的系统函数返回与系统相关的错误时引发，包括 I/O 失败，例如“找不到文件”或“磁盘已满”。

以下是 OSError 的示例：

Python

# Importing os module
import os
  
# os.ttyname() method in Python is used to get the terminal 
# device associated with the specified file descriptor.
# and raises an exception if the specified file descriptor 
# is not associated with any terminal device.
print(os.ttyname(1))

Python

# importing os module  
import os 
     
# create a pipe using os.pipe() method 
# it will return a pair of  
# file descriptors (r, w) usable for 
# reading and writing, respectively. 
r, w = os.pipe() 
  
# (using exception handling technique) 
# try to get the terminal device associated  
# with the file descriptor r or w 
try : 
    print(os.ttyname(r))  
      
except OSError as error : 
    print(error) 
    print("File descriptor is not associated with any terminal device")

输出：

OSError: [Errno 25] Inappropriate ioctl for device

我们可以使用 try...except 语句来处理 ODError 异常。

Python

# importing os module  
import os 
     
# create a pipe using os.pipe() method 
# it will return a pair of  
# file descriptors (r, w) usable for 
# reading and writing, respectively. 
r, w = os.pipe() 
  
# (using exception handling technique) 
# try to get the terminal device associated  
# with the file descriptor r or w 
try : 
    print(os.ttyname(r))  
      
except OSError as error : 
    print(error) 
    print("File descriptor is not associated with any terminal device")

输出：

[Errno 25] Inappropriate ioctl for device
File descriptor is not associated with any terminal device