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How do I correctly clean up a Python object?

...it close() statement is that you have to worry about people forgetting to call it at all or forgetting to place it in a finally block to prevent a resource leak when an exception occurs. To use the with statement, create a class with the following methods: def __enter__(self) def __exit__(self...
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Argparse optional positional arguments?

I have a script which is meant to be used like this: usage: installer.py dir [-h] [-v] 3 Answers ...
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What does if __name__ == “__main__”: do?

...ngs: it sets a few special variables like __name__, and then it executes all of the code found in the file. Let's see how this works and how it relates to your question about the __name__ checks we always see in Python scripts. Code Sample Let's use a slightly different code sample to explore ho...
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What is the meaning of “POSIX”?

... and I read it every time I encounter the term. The fact is that I never really understood what it is. 14 Answers ...
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How to check BLAS/LAPACK linkage in NumPy and SciPy?

... Given its widespread usefulness, numpy.__config__ should really be a public API. Nonetheless, you win this round, davost. – Cecil Curry Feb 5 '16 at 5:51 2 ...
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Python concatenate text files

...new file. I could open each file by f = open(...) , read line by line by calling f.readline() , and write each line into that new file. It doesn't seem very "elegant" to me, especially the part where I have to read//write line by line. ...
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Can't start Eclipse - Java was started but returned exit code=13

...ng Eclipse. I ran into this problem when trying to run Eclipse, having installed version 4.2 only minutes ago. 44 Answers ...
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Changing password with Oracle SQL Developer

... answered Feb 4 '13 at 22:21 NiallNiall 1,06911 gold badge77 silver badges33 bronze badges ...
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Tomcat: How to find out running tomcat version

...omcat/7.0.30 Server built: May 23 2013 02:54:10 Server number: 7.0.30.0 OS Name: Linux OS Version: 3.13.0-36-generic Architecture: amd64 JVM Version: 1.7.0_65-b32 JVM Vendor: Oracle Corporation share ...
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How to output a multiline string in Bash?

How can I output a multipline string in Bash without using multiple echo calls like so: 7 Answers ...