Python Built-in Exceptions

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

# 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

# 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

# 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'>

Python Built-in Exceptions

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