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Ast.literal_eval Invalid Syntax


other than that, provide some more information –Samuele Mattiuzzo Jan 4 '13 at 9:17 2 Why are you using eval in the first place? The idea is that literal_eval` only works on literals—numbers, strings, lists, etc., while eval works on any Python expression. –abarnert Jan 4 '13 at 9:32 1 @abarnert No worries, I'm add a comment| 3 Answers 3 active oldest votes up vote 2 down vote accepted In an Asterisk $[] expression, undefined variables do not return an implicit empty string or zero. Someone thought it worthwhile to add the special case > check. his comment is here

This could happen if the hist_file exists but is empty You should print hist_data before you try to eval it so you can see for sure Also: Make sure you understand FROM JOIN / \ | / \ a city_name people address ON | =______________ / \ .____ . / \ / \ p address_id a id algorithm compiler-construction language-agnostic abstract-syntax-tree share|improve Does using documentation as a developer make me look unprofessional? Please don't fill out this field.

Ast.literal_eval Invalid Syntax

How do I politely decline a research grant? vararg, identifier? value) | Delete(expr* targets) | Assign(expr* targets, expr value) | AugAssign(expr target, operator op, expr value) -- not sure if bool is allowed, can always use int | Print(expr? Join them; it only takes a minute: Sign up Python request using ast.literal_eval error Invalid syntax?

The key idea is generally to take into account as much information around the point of error as possible. I think it should be left as is. This isn't C, where you have to declare all your variables at the top; in Python, the only effect that usually has is to disguise bugs caused by typos. –abarnert Jan Abstract Syntax Tree French vs Italian resistance Can a free radical be created by chemical reaction of non-radical species?

Close Save Therefore, a latin-1 encoding declaration is redundant and anything else is either redundant (if the original unicode only contains characters that encode the same in latin-1, as in the example above) I see the following error on the console: [Apr 4 16:29:49] WARNING[27038]: ast_expr2.fl:459 ast_yyerror: ast_yyerror(): syntax error: syntax error, unexpected '=', expecting $end; Input:=TRUE^ Surrounding Console output: -- Executing [[email protected]:1] Answer("IAX2/AtlantaTeliax-10086", TV episode or movie where people on planet only live a hundred days and fall asleep at prescribed time Disease that requires regular medicine Secret salts; why do they slow down

Someone thought it worthwhile to add the special case check. Python Eval If, on the other hand, the source string would be a valid expression (e.g. you can try like this: >>> a=',8181,database,admin,12345' >>> a = str(map(str,a.split(','))) >>> a "['', '8181', 'database', 'admin', '12345']" >>> ast.literal_eval(a) ['', '8181', 'database', 'admin', '12345'] your code will look like this: View More at http://stackoverflow.com/questions/28075866/syntaxerror-unexpecte...

Ast.literal_eval Example

If your goal is the report the problem but to keep parsing (so that you can see if there are additional problems), you can put a special AST node in the Reedy (terry.reedy) * Date: 2014-08-22 22:48 [When responding, please do not quote more than a line or two. Ast.literal_eval Invalid Syntax Can a creature with 0 power attack? Python Ast.literal_eval Malformed String This is mainly useful for debugging purposes.

The abstract syntax itself might change with each Python release; this module helps to find out programmatically what the current grammar looks like. this content You have to add ) on the end! "SyntaxError: unexpected EOF while parsing" on simple python print() m... For this a special visitor exists (NodeTransformer) that allows modifications. class ast.NodeTransformer¶ A NodeVisitor subclass that walks the abstract syntax tree and allows modification of nodes. Eval looks inside the inner quotes for a coding line in certain circumstances, or maybe it always looks and we do not notice when there is not problem. Python Compile Function

Or is there some loop in the program? more hot questions question feed about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science The best I know of are the EXISTS() and ISNULL() functions. http://mmonoplayer.com/syntax-error/python-print-invalid-syntax-error.html more hot questions lang-py about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Science Other

However, messages > are not part of the language specification and improving them is > often/usually/always? Python Exec Deep theorem with trivial proof Does using documentation as a developer make me look unprofessional? If you encounter another syntax error within the next few tokens, you could backtrack, make a different guess, and try again.

Administration User List Committer List Help Tracker Documentation Tracker Development Report Tracker Problem Issue22221 classification Title: ast.literal_eval confused by coding declarations Type: behavior Stage: resolved Components: Interpreter Core Versions: Python 2.7

ast.increment_lineno(node, n=1)¶ Increment the line number of each node in the tree starting at node by n. Edit bug mail Other bug subscribers Subscribe someone else • Take the tour • Read the guide © 2004-2016 CanonicalLtd. • Terms of use • Contact Launchpad Support • Blog Plus and Times, Ones and Nines How to decrypt .lock files from ransomeware on Windows Add a language to a polyglot Why does Davy Jones not want his heart around him? Python String To Dict As a general rule, if you want a working parser, better to get one that has a track record rather than roll it yourself.

globals, expr? If this is wanted, include_attributes can be set to True. If you want to understand how to do this, you need to understand the theory (oops, there's that compiler book again) of how the parsers are constructed. (I have implemented this http://mmonoplayer.com/syntax-error/definition-and-example-of-syntax.html I'm unable to reproduce the problem with any phones I have here, and many callers get through just fine.

Report a bug This report contains Public information Edit Everyone can see this information. Here are some of my results on US Win 7, cp1252, 3.4.1, interactive prompt, idle pass: eval(u'"""# -*- coding: utf-8 -*-\na"""') fail: eval(u'"""\n# -*- coding: utf-8 -*-\na"""') since coding can be So it seems that, on that line, the = is a construct that the grammar does not support. In addition, there is one class defined for each constructor on the right-hand side; these classes inherit from the classes for the left-hand side trees.

View More Recalll - Medium for programmers. Both take "data" as their argument, not a variable name, so they aren't really testing the variable so much as what the variable expands to. If the source string is not a valid expression (like an empty string), a SyntaxError will be raised by compile. exten => START,n,GotoIf($[${OVERRIDE_TIME_OF_DAY}=TRUE]?OPEN,1) ; No override...