Polymorphism in R Programming

EnvironmentError Exception in Python

Last Updated : 21 Aug, 2020

EnvironmentError is the base class for errors that come from outside of Python (the operating system, file system, etc.). It is the parent class for IOError and OSError exceptions.

exception IOError – It is raised when an I/O operation (when a method of a file object ) fails. e.g “File not found” or “Disk Full”.
exception OSError – It is raised when a function returns a system-related error.

Any example of an IOError or OSError should also be an example of Environment Error.

Example 1 :

Python3

Python3

# importing the module 
import sys 
  
try: 
    # an invalid path 
    file = open("GeeksforGeeks.txt", 'r') 
except Exception as e: 
    print(e) 
    print(sys.exc_info()[0]) 

Output

[Errno 2] No such file or directory: 'GeeksforGeeks.txt'
<class 'FileNotFoundError'>

Example 2 :

Python3

Python3

# importing the module 
import os 
import sys 
  
try: 
    for i in range(7): 
        print(i) 
        print(os.ttyname(i)) 
except Exception as e: 
    print(e) 
    print(sys.exc_info()[0]) 

Output

0
[Errno 25] Inappropriate ioctl for device
<class 'OSError'>

Example 3 :

Python3

Python3

# importing the module 
import sys 
import os 
  
try: 
    # an invalid path 
    os.rmdir('GEEKS') 
except Exception as e: 
    print(e) 
    print(sys.exc_info()[0])

Output

[Errno 2] No such file or directory: 'GEEKS'
<class 'FileNotFoundError'>

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