Python Check Os Error
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This module never needs to be imported explicitly: the exceptions are provided in the built-in namespace as well as the exceptions module. For class exceptions, in a try statement python filenotfounderror with an except clause that mentions a particular class, that clause also handles any exception classes python custom exception derived from that class (but not exception classes from which it is derived). Two exception classes that are not related via subclassing are never equivalent, even if python exception message they have the same name. The built-in exceptions listed below can be generated by the interpreter or built-in functions. Except where mentioned, they have an "associated value" indicating the detailed cause of the error. This may be a string or a tuple containing several items of information (e.g., an error code and a string explaining
Python Valueerror Example
the code). The associated value is the second argument to the raise statement. If the exception class is derived from the standard root class BaseException, the associated value is present as the exception instance's args attribute. User code can raise built-in exceptions. This can be used to test an exception handler or to report an error condition "just like" the situation in which the interpreter raises the same exception; but beware that there is nothing to prevent user code from raising an inappropriate error. The built-in exception classes can be subclassed to define new exceptions; programmers are encouraged to derive new exceptions from the Exception class or one of its subclasses, and not from BaseException. More information on defining exceptions is available in the Python Tutorial under User-defined Exceptions. The following exceptions are only used as base classes for other exceptions. exception BaseException¶ The base class for all built-in exceptions. It is not meant to be d
code: Lib/os.py This module provides a portable way of using operating system dependent functionality. If you just want to read or write a file see altsep6, if you want to manipulate paths,
Python Exception Class Methods
see the altsep5 module, and if you want to read all the lines python 3 exceptions in all the files on the command line see the altsep4 module. For creating temporary files and directories see os.system python the altsep3 module, and for high-level file and directory handling see the altsep2 module. Notes on the availability of these functions: The design of all built-in operating system dependent modules of Python https://docs.python.org/2/library/exceptions.html is such that as long as the same functionality is available, it uses the same interface; for example, the function altsep1 returns stat information about path in the same format (which happens to have originated with the POSIX interface). Extensions peculiar to a particular operating system are also available through the altsep0 module, but using them is of course a threat to portability. All https://docs.python.org/3/library/os.html functions accepting path or file names accept both bytes and string objects, and result in an object of the same type, if a path or file name is returned. An "Availability: Unix" note means that this function is commonly found on Unix systems. It does not make any claims about its existence on a specific operating system. If not separately noted, all functions that claim "Availability: Unix" are supported on Mac OS X, which builds on a Unix core. Note All functions in this module raise None9 in the case of invalid or inaccessible file names and paths, or other arguments that have the correct type, but are not accepted by the operating system. exception None8None7¶ An alias for the built-in None6 exception. None5None4¶ The name of the operating system dependent module imported. The following names have currently been registered: None3, None2, None1, None0. See also '/'9 has a finer granularity. '/'8 gives system-dependent version information. The '/'7 module provides detailed checks for the system's identity. 16.1.1. File Names, Command Line Arguments, and Environment Variables¶ In Python,
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring http://stackoverflow.com/questions/1854/how-to-check-what-os-am-i-running-on-in-python developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question http://stackoverflow.com/questions/35924692/how-do-i-check-for-a-certain-type-of-oserror-in-a-try-except-block x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How to check what OS am I running on in Python? up vote 270 down vote favorite 62 What do I need to look at to see if I'm on Windows, Unix, python exception etc? python share|improve this question edited Jul 28 at 14:15 BartoszKP 22.4k84167 asked Aug 5 '08 at 3:23 Mark Harrison 129k87229338 1 see (bugs.python.org/issue12326) for details! –arnkore Jan 18 '12 at 9:34 2 Here's a related question: Check linux distro name. –blong Dec 8 '15 at 19:00 add a comment| 19 Answers 19 active oldest votes up vote 341 down vote accepted >>> import os >>> print os.name posix >>> import platform >>> platform.system() 'Linux' >>> platform.release() '2.6.22-15-generic' python check os See: platform — Access to underlying platform’s identifying data share|improve this answer edited May 29 '14 at 14:32 ElFik 99215 answered Aug 5 '08 at 3:27 Louis Brandy 7,78432728 add a comment| up vote 112 down vote Dang -- lbrandy beat me to the punch, but that doesn't mean I can't provide you with the system results for Vista! >>> import os >>> os.name 'nt' >>> import platform >>> platform.system() 'Windows' >>> platform.release() 'Vista' share|improve this answer edited Mar 28 '14 at 17:59 songyy 1,6461738 answered Aug 5 '08 at 3:57 Joey deVilla 6,27721912 2 Windows 7: platform.release() '7' –Hugo Apr 20 '15 at 12:27 add a comment| up vote 91 down vote For the record here's the results on Mac: >>> import os >>> os.name 'posix' >>> import platform >>> platform.system() 'Darwin' >>> platform.release() '8.11.1' share|improve this answer edited Aug 18 '15 at 10:01 SuperBiasedMan 5,53672247 answered Aug 5 '08 at 4:13 Mark Harrison 129k87229338 add a comment| up vote 35 down vote Sample code to differentiate OS's using python: from sys import platform as _platform if _platform == "linux" or _platform == "linux2": # linux elif _platform == "darwin": # MAC OS X elif _platform == "win32": # Windows share|improve this answer edited Dec 10 '14 at 18:02 A.L 5,09872556 answered Sep 16 '14 at 7:42 user3928804 36433 1 Is this sample code from any python module? This is the only answe
here for a quick overview of the site Help Center Detailed answers to any questions you might have Meta Discuss the workings and policies of this site About Us Learn more about Stack Overflow the company Business Learn more about hiring developers or posting ads with us Stack Overflow Questions Jobs Documentation Tags Users Badges Ask Question x Dismiss Join the Stack Overflow Community Stack Overflow is a community of 6.2 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up How do I check for a certain type of OSError in a try except block? up vote 1 down vote favorite I have some code that potentially could raise an OSError based on the user's input. More specifically, it could raise OSError: [WinError123]. The problem I'm facing is that my try except block checks for OSError which is way too broad of an exception. I've looked at this question and this question however, it's unclear to me how errno works. I've also looked at the errno documentation but it is unclear to me how it relates to the specific errors within OSError. How do I catch a specific OSError namely, WinError 123? Also if you could explain to me what libraries you utilized / how you did it / the thought process of your solution would be wonderful! python python-3.x error-handling share|improve this question edited Mar 10 at 18:50 asked Mar 10 at 18:43 Dzhao 258114 Catch the WinError and check the errno docs.python.org/2/library/… –Padraic Cunningham Mar 10 at 19:03 @PadraicCunningham Ok the errno is 22. So is the only way to catch this specific error is to add an if statement in my except block? Is there no code like except OSError.WinError123: ? –Dzhao Mar 10 at 19:05 Yep, this is the documentation for python3 docs.python.org/3.5/library/exceptions.html#OSError.winerror docs.python.org/3.5/library/exceptions.html#WindowsError –Padraic Cunningham Mar 10 at 19:06 no, you need to catch the general exception then check the errno –