Python Disk I O Error
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This module never needs to be imported explicitly: the exceptions are provided in the built-in namespace as
Python Exception Class
well as the exceptions module. For class exceptions, in python 3 exceptions a try statement with an except clause that mentions a particular class, that
Python Filenotfounderror
clause also handles any exception classes derived from that class (but not exception classes from which it is derived). Two exception classes that are not python exception message related via subclassing are never equivalent, even if 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 python custom exception several items of information (e.g., an error code and a string explaining 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 ar
this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ sqlite3.OperationalError: disk I/O error Hello, I have a piece
Python Valueerror Example
of code that works fine on my desktop in cygwin, but python exception class methods fails on our server. I am creating a simple database using the sqlite3 module in python. I open
Assertionerror Python
a connection con=sqlite3.connect("./file.db") #works cur=con.cursor() #works cur.execute("""create table test(name, age)""") #fails on server, works on desktop the result: An empty file.db is created, and I get "sqlite3.OperationalError: disk https://docs.python.org/2/library/exceptions.html I/O error" on the execute command. If I use ":memory:", the command works fine. For some reason, it is having trouble writing to the disk. The disk is actually some networked file system; not sure if that matters. Thanks, Kerry _______________________________________________ sqlite-users mailing list [hidden email] http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users Roger Binns Reply | Threaded Open this post in threaded http://sqlite.1065341.n5.nabble.com/sqlite3-OperationalError-disk-I-O-error-td18568.html view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: sqlite3.OperationalError: disk I/O error -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 10/03/2011 03:05 PM, Dungan, Kerry wrote: > the result: > An empty file.db is created, and I get "sqlite3.OperationalError: disk I/O error" on the execute command. There could be any number of reasons. The message is coming from the SQLite library and it is doing that because of something that happened with the operating system. My best guess is that the journal can't be created for some reason. The server may have extra security rules, quotas etc causing this. The easiest way to find the problem is to run the program under strace which will show every system call made and the response. Roger -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAk6KO5EACgkQmOOfHg372QT59gCgsGUnfKkN0XvZoEB6ULgV1tQL 1YoAn3GNFXbOwyYQpJ6/VAO0rErdGWZA =6WFN -----END PGP SIGNATURE----- _______________________________________________ sqlite-users mailing list [hidden email] http://sqlite.org:8080/cgi-bin/mailman/listinfo/sqlite-users Dungan, Kerry Reply | Threaded Open this post in threaded view ♦ ♦ | Report Content as Inappropriate ♦ ♦ Re: sqlite3.Operational
Sign in Pricing Blog Support Search GitHub This repository Watch 137 Star 2,881 Fork 635 python-pillow/Pillow Code Issues https://github.com/python-pillow/Pillow/issues/1380 113 Pull requests 38 Projects 0 Wiki Pulse Graphs New issue PNG write is failing due to IOError #1380 Closed bschollnick opened this Issue Aug 20, https://pymotw.com/2/exceptions/ 2015 · 5 comments Projects None yet Labels None yet Milestone No milestone Assignees No one assigned 4 participants bschollnick commented Aug 20, 2015 python exception Folks, I believe I have found an file (JPG) that is causing PIL to report a false IO Error, and write a zero byte file. Now the following code is working fine for other JPG, PNG, etc files: (Please excuse the try / except block, I've been trying to debug this) try: image_file = python exception class Image.open(src_filename) except IOError: print "File thumbnail ", src_filename print "save thumbnail ", t_filename print "IOError opening the file[%s] ." % (src_filename) except IndexError as detail: print "File thumbnail ", src_filename print "save thumbnail ", t_filename print "The File [%s] generated an IndexError." % (src_filename) print detail except TypeError: print "File thumbnail ", src_filename print "save thumbnail ", t_filename print "The File [%s] is not the proper type (TypeError)." % (src_filename) image_file.thumbnail((t_size, t_size), Image.ANTIALIAS) try: image_file.save(t_filename, "PNG", optimize=True) return True except IOError: print "File thumbnail ", src_filename print "save thumbnail ", t_filename print "IOError writing the file[%s] ." % (src_filename) except IndexError as detail: print "File thumbnail ", src_filename print "save thumbnail ", t_filename print "The File [%s] (IndexError) is damaged." % (src_filename) print detail except TypeError: print "File thumbnail ", src_filename print "save thumbnail ", t_filename print "The File [%s] (TypeError) is damaged." % (src_filename) The JPG in question is a straight forward JPG, and is available from, https://dl.dropboxuser
Exception StandardError ArithmeticError LookupError EnvironmentError Raised Exceptions AssertionError AttributeError EOFError FloatingPointError GeneratorExit IOError ImportError IndexError KeyError KeyboardInterrupt MemoryError NameError NotImplementedError OSError OverflowError ReferenceError RuntimeError StopIteration SyntaxError SystemError SystemExit TypeError UnboundLocalError UnicodeError ValueError ZeroDivisionError Warning Categories Navigation Table of Contents Previous: Built-in Objects Next: String Services This Page Show Source Examples The output from all the example programs from PyMOTW has been generated with Python 2.7.8, unless otherwise noted. Some of the features described here may not be available in earlier versions of Python. If you are looking for examples that work under Python 3, please refer to the PyMOTW-3 section of the site. Navigation index modules | next | previous | PyMOTW » Built-in Objects » exceptions - Built-in error classes¶ Purpose:The exceptions module defines the built-in errors used throughout the standard library and by the interpreter. Available In:1.5 and later Description¶ In the past, Python has supported simple string messages as exceptions as well as classes. Since 1.5, all of the standard library modules use classes for exceptions. Starting with Python 2.5, string exceptions result in a DeprecationWarning, and support for string exceptions will be removed in the future. Base Classes¶ The exception classes are defined in a hierarchy, described in the standard library documentation. In addition to the obvious organizational benefits, exception inheritance is useful because related exceptions can be caught by catching their base class. In most cases, these base classes are not intended to be raised directly. BaseException¶ Base class for all exceptions. Implements logic for creating a string representation of the exception using str() from the arguments passed to the constructor. Exception¶ Base class for exceptions that do not result in quitting the running application. All user-defined exceptions should use Exception as a base class. StandardError¶ Base class for built-in exceptions used in the standard library. ArithmeticError¶ Base class for mat