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POPython: Maximum recursion depth exceeded
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  1. POPython: Maximum recursion depth exceeded
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    copied!<p>I have the following recursion code, at each node I call sql query to get the nodes belong to the parent node. </p> <p>here is the error: </p> <pre><code>Exception RuntimeError: 'maximum recursion depth exceeded' in &lt;bound method DictCursor.__del__ of &lt;MySQLdb.cursors.DictCursor object at 0x879768c&gt;&gt; ignored RuntimeError: maximum recursion depth exceeded while calling a Python object Exception AttributeError: "'DictCursor' object has no attribute 'connection'" in &lt;bound method DictCursor.__del__ of &lt;MySQLdb.cursors.DictCursor object at 0x879776c&gt;&gt; ignored </code></pre> <p>Method that I call to get sql results:</p> <pre><code>def returnCategoryQuery(query, variables={}): cursor = db.cursor(cursors.DictCursor); catResults = []; try: cursor.execute(query, variables); for categoryRow in cursor.fetchall(): catResults.append(categoryRow['cl_to']); return catResults; except Exception, e: traceback.print_exc(); </code></pre> <p>I actually don't have any issue with the above method but I put it anyways to give proper overview of the question.</p> <p>Recursion Code:</p> <pre><code>def leaves(first, path=[]): if first: for elem in first: if elem.lower() != 'someString'.lower(): if elem not in path: queryVariable = {'title': elem} for sublist in leaves(returnCategoryQuery(categoryQuery, variables=queryVariable)): path.append(sublist) yield sublist yield elem </code></pre> <p>Calling the recursive function </p> <pre><code>for key, value in idTitleDictionary.iteritems(): for startCategory in value[0]: print startCategory + " ==== Start Category"; categoryResults = []; try: categoryRow = ""; baseCategoryTree[startCategory] = []; #print categoryQuery % {'title': startCategory}; cursor.execute(categoryQuery, {'title': startCategory}); done = False; while not done: categoryRow = cursor.fetchone(); if not categoryRow: done = True; continue; rowValue = categoryRow['cl_to']; categoryResults.append(rowValue); except Exception, e: traceback.print_exc(); try: print "Printing depth " + str(depth); baseCategoryTree[startCategory].append(leaves(categoryResults)) except Exception, e: traceback.print_exc(); </code></pre> <p>Code to print the dictionary, </p> <pre><code>print "---Printing-------" for key, value in baseCategoryTree.iteritems(): print key, for elem in value[0]: print elem + ','; raw_input("Press Enter to continue...") print </code></pre> <p>If the recursion is too deep I should be getting the error when I call my recursion function, but when I get this error when I print the dictionary.</p>
 

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