Python OS Module : Errors














































Python OS Module : Errors




Python OS Module : Errors 



Errors and exceptions

 1.os.error 

os.error: It is environment error class for I/O errors. OSError is raised when any function returns any system-related error. Each of the os module functions returns these errors when any invalid or inaccessible file is triggered.
>>> import os
>>> try:
... fileName='osmodule.txt'
... f=open(fileName,'r')
... text=f.read()
... f.close()
... except os.error:
... print("error in "+fileName)
...
error in osmodule.txt
>>> f=open(fileName,'r')

Output:


>>> try:
... fileName='/home/soumi/osmodule.txt'
... f=open(fileName,'r')
... text=f.read()
... f.close()
... except os.error:
... print("error in "+fileName)
...


error in /home/soumi/osmodule.txt

Output:

2. os.strerror

os.strerror() method in Python is used to get the error message corresponding to the error code.

Syntax: os.strerror(code)

Parameter: code: A integer value that denotes the error code

Return Type: This method returns a string representing the error message corresponding to the specified error code.


Type the following code in your IDE:

>>> code=1
>>> error=os.strerror(code)
>>> print("Error message corresponding to error code % d:" % code, error)
Error message corresponding to error code 1: Operation not permitted
>>> code=5
>>> error=os.strerror(code)
>>> print("Error message corresponding to error code % d:" % code, error)
Error message corresponding to error code 5: Input/output error
>>> code=3
>>> error=os.strerror(code)
>>> print("Error message corresponding to error code % d:" % code, error)
Error message corresponding to error code 3: No such process
>>> code=2
>>> error=os.strerror(code)
>>> print("Error message corresponding to error code % d:" % code, error)
Error message corresponding to error code 2: No such file or directory
>>> code=4
>>> error=os.strerror(code)
>>> print("Error message corresponding to error code % d:" % code, error)
Error message corresponding to error code 4: Interrupted system call
>>>
Output:




Click here to go to the Article on Working with directories with os module functions.

Click here to go the next article.

Thanks for viewing the article, please like and subscribe!





More Articles of Soumi Bardhan:

Name Views Likes
Python OS Module : Errors 560 1
Getting started with SQL Alvhemy: Linux installation 335 1
SQLAlchemy-An Introduction to sqlalchemy 582 2
Python OS Module: Management of processes: Part 1 450 1
SQL Alchemy: Creating a Database and querying data: 455 1
Python OS Module: Article 2: File Handling Functions Part 1 768 1
SQL ALCHEMY: Pharmacy Database Web Application with Flask 1095 1
Python OS Module : Working with Directories : Part 3 365 1
Python OS Module More Process management functions (ID) : 458 1
Python OS Module: Working with directories: Part 4 636 0
Python OS Module: File handling functions (2) : Article 3 450 1
Python OS Module: Introduction 424 2
c++ program to check if a given tree is a sum tree 600 2
Python Program to Illustrate the Operations of Singly Linked List 361 1
Json Module: Introduction 359 1
Python OS Module: Working with directories: Article 4 604 1
SQL Alchemy : Introduction 566 2
Python OS Module : Errors 581 10
Python OS Module: Accessing Envioronment Variables 750 1
Python OS Module: Working with Directories: Part 2 548 1
SQLAlchemy-An Introduction to sqlalchemy 29 3
Flask- SQLAlchemy: Creating a minimalistic application with flask-sqlalchemy 438 1