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Invalid syntax error (what's wrong with this code?) up vote 2 down vote favorite I am trying to use finally in the following function, however, Python reports a Syntax error. I'm sure I'm doing something silly, but I can't seem to spot it ... Snippet follows below: # Store ids with key # Returns GUID (used to clear table after words) def storeIdsInTemporaryTable(dbinfo, id_list): conn =

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dbinfo['db_connection'] guid = genutils.getGUID() orig_tableinfo = dbinfo['table'] orig_datarows = dbinfo['datarows'] metadata = dbinfo['metadata'] sql = "INSERT INTO temporary_data_key (key) VALUES ({0}) RETURNING id".format(guid) key_id = executeSQLonDbConnection(dbinfo, sql, return_field='id') tableinfo = Table('temporary_data', metadata, autoload=True) datarows = [] for id_value in id_list: datarows.append( { 'key_id': key_id, 'id_value': id_value} ) try: insertToDb(dbinfo) except: guid = None # to indicate an error occured if key_id: conn.execute("DELETE FROM temporary_data_key WHERE key={0}".format(guid) finally: dbinfo['table'] = orig_tableinfo dbinfo['datarows'] = orig_datarows return guid What is causing the syntax error? As an aside, I am aware that I need to wrap the two inserts in a transaction, but for some reason, I can't get transactions to work (SQLALchemy throws a transaction related error) - so thats for another question another time.. [[Edit]] The exception error (now fixed) was: Traceback (most recent call last): File "", line 1, in File "/path/to/script.py", line 1632 finally: ^ SyntaxError: invalid syntax python sqlalchemy share|improve this question edited Jun 8 '12 at 10:02 asked Jun 8 '12 at 9:34 Homunculus Reticulli 10.2k39113190 1 Can you post the exception as well please? –Sebastian Blask Jun 8 '12 at 9:39 3 @vartec CodeReview is for improving effi

you have probably seen some. There are (at least) two distinguishable kinds of errors: syntax errors and exceptions. 8.1. Syntax Errors¶ Syntax errors, python print exception also known as parsing errors, are perhaps the most common kind of

Python Try Except Else

complaint you get while you are still learning Python: >>> while True print 'Hello world' File "", line 1 is nested try block possible in python while True print 'Hello world' ^ SyntaxError: invalid syntax The parser repeats the offending line and displays a little ‘arrow' pointing at the earliest point in the line where the http://stackoverflow.com/questions/10946339/python-try-except-finally-invalid-syntax-error-whats-wrong-with-this-code error was detected. The error is caused by (or at least detected at) the token preceding the arrow: in the example, the error is detected at the keyword print, since a colon (':') is missing before it. File name and line number are printed so you know where to look in case the input came from a script. https://docs.python.org/2/tutorial/errors.html 8.2. Exceptions¶ Even if a statement or expression is syntactically correct, it may cause an error when an attempt is made to execute it. Errors detected during execution are called exceptions and are not unconditionally fatal: you will soon learn how to handle them in Python programs. Most exceptions are not handled by programs, however, and result in error messages as shown here: >>> 10 * (1/0) Traceback (most recent call last): File "", line 1, in ZeroDivisionError: integer division or modulo by zero >>> 4 + spam*3 Traceback (most recent call last): File "", line 1, in NameError: name 'spam' is not defined >>> '2' + 2 Traceback (most recent call last): File "", line 1, in TypeError: cannot concatenate 'str' and 'int' objects The last line of the error message indicates what happened. Exceptions come in different types, and the type is printed as part of the message: the types in the example are ZeroDivisionError, NameError and TypeError. The string printed as the exception type is the name of the built-in exc

and get tips & solutions from a community of 418,551 IT Pros & Developers. It's quick & easy. try/except/else/finally problem P: n/a Ed https://bytes.com/topic/python/answers/670156-try-except-else-finally-problem Jensen I'm using: Python 2.3.2 (#1, Oct 17 2003, 19:06:15) [C] on http://www.python-course.eu/python3_exception_handling.php sunos5 And I'm trying to execute: #! /usr/bin/env python try: f = file('test.txt', 'r') except IOError: print 'except' else: print 'else' finally: print 'finally' And the results are: File "./test.py", line 9 finally: ^ SyntaxError: invalid syntax What am I doing wrong? Thanks in advance for any help. Jun python exception 28 '07 #1 Post Reply Share this Question 5 Replies P: n/a Peter Otten Ed Jensen wrote: I'm using: Python 2.3.2 (#1, Oct 17 2003, 19:06:15) [C] on sunos5 And I'm trying to execute: #! /usr/bin/env python try: f = file('test.txt', 'r') except IOError: print 'except' else: print 'else' finally: print 'finally' And the results are: File "./test.py", line 9 finally: finally python syntax ^ SyntaxError: invalid syntax What am I doing wrong? You need Python 2.5 for that to work. In older Python versions you have to nest try...except...else and try...finally. Peter Jun 28 '07 #2 P: n/a Sebastian Wiesner [ Ed Jensen try: f = file('test.txt', 'r')except IOError: print 'except'else: print 'else'finally: print 'finally' You need Python 2.5 for that to work. In older Python versions you have to nest try...except...else and try...finally. Thanks Peter. Given the code above, can you show me what that would look like? The nested

Data Types: Lists and StringsList ManipulationsShallow and Deep CopyDictionariesSets and Frozen Setsinput via the keyboardConditional StatementsLoops, while LoopFor LoopsOutput with PrintFormatted output with string modulo and the format methodFunctionsRecursion and Recursive FunctionsParameter Passing in FunctionsNamespacesGlobal and Local VariablesDecoratorsMemoization with DecoratorsRead and Write FilesModular Programming and ModulesRegular ExpressionsRegular Expressions, AdvancedLambda Operator, Filter, Reduce and MapList ComprehensionIterators and GeneratorsException HandlingTests, DocTests, UnitTestsObject Oriented ProgrammingClass and Instance AttributesProperties vs. getters and settersInheritanceMultiple InheritanceMagic Methods and Operator OverloadingOOP, Inheritance ExampleSlotsClasses and Class CreationRoad to MetaclassesMetaclassesMetaclass Use Case: Count Function Calls Exceptions "Nothing travels faster than the speed of light with the possible exception of bad news, which obeys its own special laws." (Douglas Adams) "General principles should not be based on exceptional cases." (Robert J. Sawyer) This website is supported by: Linux and Python Training Courses This topic in German / Deutsche Übersetzung: AusnahmebehandlungPython 3This is a tutorial in Python3, but this chapter of our course is available in a version for Python 2.x as well: Exception Handling in Python 2.x Training Classes This website aims at providing you with educational material suitable for self-learning. Nevertheless, it is faster and more efficient to attend a "real" Python course in a classroo, with an experienced trainer. So why not attend one of the live Python courses in Strasbourg, Paris, London, Berlin, Munich, Hamburg, Frankfurt, or Lake Constance by Bernd Klein, the author of this tutorial? In-house Training Courses If you like it, we will come to your company or institute and provide a special training for your employees, as we've done it many times in Amsterdam (The Netherlands), Berlin (Germany), Bern (Switzerland), Basel (Switzerland), Zurich (Switzerland), Frankfurt (Germany), Locarno (Switzerland), Den Haag (The Hague), Hamburg, Toronto (Canada), Edmonton (Canada), Munich (Germany) and many other cities. We do training courses in England, Switzerland,

 

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