with-statement

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python's `with` statement target is unexpectedly None

seems like I do not understand something with---the python with statement. Consider this class: class test(object):[详细]

2023-02-07 03:49 分类：问答
Can I write a function that detect if it is called from 'with'-statement or not?

More specifically, can I detect if a function is called as EXPR in with EXPR: BLOCK statement? I am trying to make myself familiar with the usage of with-statement in python.As a first step, I re-impl[详细]

2023-02-04 03:25 分类：问答
data cleansing using grouping based on time interval - sql2005

I have the following data in a 开发者_运维知识库table that I would like to report on without having to delete any rows.[详细]

2023-02-03 15:57 分类：问答
Can I use python with statement for conditional execution?

I\'m trying to write code that supports the following semantics: with scope(\'action_name\') as s: do_something()[详细]

2023-01-27 20:21 分类：问答
Is this the best way to do a "with" statement in C++?

Edit: So this question was misinterpreted to such a ludicrous degree that it has no point anymore. I don\'t know how, since the question that I actually asked was whether my specific implementation o[详细]

2023-01-23 05:11 分类：问答
How to make a class that acts like a string?

I have a context manager that captures output to a string for a block of code indented under a with statement. This context manager yields a custom result object which will, when the block has finishe[详细]

2023-01-20 04:53 分类：问答
Implementing use of 'with object() as f' in custom class in python

I have to open a file-like object in python (it\'s a serial connection through /dev/) and then close it. This is done several times in several methods of my class. How I WAS doing it was opening the f[详细]

2023-01-17 18:10 分类：问答
Operating on a file's content despite a failure in the 'with' block

I\'ve just written a utility in Python to do something I need (irrelevant, but it\'s to generate a ctags-compatible tag file for an in-house DSL).[详细]

2023-01-16 03:39 分类：问答
Is there any research on (or better use of) of RAII in GC languages?

Note: Object Lifetime RAII not using/with block scope RAII It seems like its possible using an extra gc category, short lived objects(check gc category somewhat frequently), long lived objects(check[详细]

2023-01-15 09:35 分类：问答
What is the python "with" statement designed for?

I came across the开发者_如何学JAVA Python with statement for the first time today.I\'ve been using Python lightly for several months and didn\'t even know of its existence!Given its somewhat obscure s[详细]

2023-01-03 11:52 分类：问答