with-statement

Hey, I have this piece of code here, been battling with it for hours. basically what this sql statement does is gets ALL subfolders of a specified folder (@compositeId). WITH auto_table (id, Name, ParentID) AS ( SELECT C.ID, C.Name, C.ParentID FROM Composite_Table AS C WHERE C.ID = @compositeId UNION ALL SELECT C.ID, C.Name, C.ParentID FROM Composite_Table AS C INNER JOIN auto_table AS a_t ON C.ParentID = a_t.ID ) SELECT * FROM auto_table This query would return something like this: Id | Name | ParentId 1 | StartFolder| NULL 2 | Folder2 | 1 4 | Folder3 | 1 5 | Folder4 | 4 Now i want to convert

Is there a way to create a temporary directory in a context manager with Python 2.7? with tempfile.TemporaryDirectory() as temp_dir: # modify files in this dir # here the temporary diretory does not exist any more. Nicholas Bishop Another option is the "backports.tempfile" package on pypi: https://pypi.python.org/pypi/backports.tempfile Quoting the project's description: "This package provides backports of new features in Python’s tempfile module under the backports namespace." Install with: pip install backports.tempfile Then use it in your script: from backports import tempfile with tempfile

Consider the following: with open(path, mode) as f: return [line for line in f if condition] Will the file be closed properly, or does using return somehow bypass the context manager ? Yes, it acts like the finally block after a try block, i.e. it always executes (unless the python process terminates in an unusual way of course). It is also mentioned in one of the examples of PEP-343 which is the specification for the with statement: with locked(myLock): # Code here executes with myLock held. The lock is # guaranteed to be released when the block is left (even # if via return or by an uncaught

I'm quite new to coding and have encountered a probably very trivial issue. When I run the code line by line in the 'Trade_Sheet' tab, the variable Date_range is picked up correctly as a date previously copied, and updated for 7 days later. However the problem comes when I run the macro in the main tab 'Share_Calc_Tab' where the macro is situated. If I do so, it seems like the variable Date_range sets to 0, and while the rest of the operation is performed, the date will be missing. The code is below: Sub Audit_Trade() Dim Trade_Sheet As Worksheet Dim Share_Calc_Tab As Worksheet Dim lastrow As

I specifically need to use with open statement for opening the files, because I need to open a few hundred files together and merge them using K-way merge. I understand, ideally I should have kept K low, but I did not foresee this problem. Starting from scratch is not an option now as I have a deadline to meet. So at this point, I need very fast I/O that does not store the whole/huge portion of file in memory (because there are hundreds of files, each of ~10MB). I just need to read one line at a time for K-way merge. Reducing memory usage is my primary focus right now. I learned that with open

I have a file which has rows extending to tens of thousands across 8 columns. One particular column contains the weekend date. I have to count the number of weekends present in this file. Is there a way to extract the data as shown in the image below? If we can extract and get the count of this collection, then the problem is solved. Please help. Thanks in advance! The following will take a series of three randomized upper-case letters from column A (25K values), put them into a dictionary as unique keys (13,382 values) and dump them back into column C on the same worksheet before sorting them

In Visual Basic, if you are going to change multiple properties of a single object, there's a With/End With statement: Dim myObject as Object // ' Rather than writing: myObject.property1 = something myObject.property2 = something2 // ' You can write: with myObject .property1 = something .property2 = something2 ... End With I know C# can do it when creating a new object: Object myObject = new Object { property1 = something, property2 = something2, ...}; But how do I do that if myOject is already created (like what Visual Basic is doing)? You cannot do this in C#. This feature is specific to VB