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unbound method f() must be called with fibo_ instance as first argument (got classobj instance inste

...en to create an instance of the class. An example would be def user_group(self): #This is an instance method return "instance method returning group" Class label method: @classmethod def user_group(groups): #This is an class-label method return "class method retur...
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Is there a way to access the “previous row” value in a SELECT statement?

... It works correctly if there is no grouping in the query, but what if we want to subtract values from previous value only within a group, lets say same EmployeeID, then how can we do that? Coz running this works only for the top 2 rows of each group and not to...
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Catching multiple exception types in one catch block

... the same superclass, and you needed to handle five (or whatever large-ish group) of them one way and the rest the other, you can STILL do this. interface Group1 {} class AError extends LetterError implements Group1 {} class BError extends LetterError implements Group1 {} And then: catch (Grou...
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How to find duplicates in 2 columns not 1

... stone_id, upcharge_title, count(*) from your_table group by stone_id, upcharge_title having count(*) > 1 share | improve this answer | ...
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How to convert string to Title Case in Python?

... "The algorithm uses a simple language-independent definition of a word as groups of consecutive letters. The definition works in many contexts but it means that apostrophes in contractions and possessives form word boundaries, which may not be the desired result". One possible solution would be to...
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Using Panel or PlaceHolder

... The Placeholder does not render any tags for itself, so it is great for grouping content without the overhead of outer HTML tags. The Panel does have outer HTML tags but does have some cool extra properties. BackImageUrl: Gets/Sets the background image's URL for the panel HorizontalAlign: Gets...
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Regex to validate password strength

...}) lowercase letters. {3,} indicates that you want 3 of this group (?=(.*[A-Z]){2,}) uppercase letters. {2,} indicates that you want 2 of this group (?=(.*[0-9]){2,}) numbers. {2,} indicates that you want 2 of this group (?=(.*[!@#$%^&*()\-__+.]){1,}) a...
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Check if a string is null or empty in XSLT

... Absent of any other information, I'll assume the following XML: <group> <item> <id>item 1</id> <CategoryName>blue</CategoryName> </item> <item> <id>item 2</id> <CategoryName></Cate...
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Iterating over every two elements in a list

... You need a pairwise() (or grouped()) implementation. For Python 2: from itertools import izip def pairwise(iterable): "s -> (s0, s1), (s2, s3), (s4, s5), ..." a = iter(iterable) return izip(a, a) for x, y in pairwise(l): print "%...
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Stop “developer tools access needs to take control of another process for debugging to continue” ale

...;dict> ... </dict> - <key>group</key> - <string>_developer</string> <key>shared</key> <true/> - <key>timeout</key> - <integer>36000</integer...