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Deleting folders in python recursively
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The default behavior of os.walk() is to walk from root to leaf. Set topdown=False in os.walk() to walk from leaf to root.
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How to read a file line-by-line into a list?
...dure mentioned here. The memory usage is far better when each line is read from the file and processed, as suggested by @DevShark here. Holding all lines in a collection object is not a good idea if memory is a constraint or the file is large. The execution time is similar in both the approa...
What's the difference between a single precision and double precision floating point operation?
..., cache, and bandwidth, thereby reducing the overall system performance.
From Webopedia:
The term double precision is something of a misnomer because the precision is not really double.
The word double derives from the fact that a double-precision number uses twice as many bits as a regular ...
How to jump to a particular line in a huge text file?
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linecache:
The linecache module allows one to get any line from a Python source file, while attempting to optimize internally, using a cache, the common case where many lines are read from a single file. This is used by the traceback module to retrieve source lines for inclusion in t...
Converting XML to JSON using Python?
...). As of Python 2.6, support for converting Python data structures to and from JSON is included in the json module.
So the infrastructure is there.
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What does 'super' do in Python?
...t__. while
super(Child, self).__init__()
means to call a bound __init__ from the parent class that follows Child in the instance's Method Resolution Order (MRO).
If the instance is a subclass of Child, there may be a different parent that comes next in the MRO.
Explained simply
When you writ...
Remove an Existing File from a Git Repo
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Just to give the full answer all at once:
from klemens: You need to add the file to your .gitignore file somewhere above the undesired file in the repo. i.e.
$ cd
$ cat >> .gitignore
development.log
C-d
from m. narebski: You then need to remove the file from ...
StringBuilder vs String concatenation in toString() in Java
...erties it might not make a
difference, but at what point do you
switch from concat to builder?
At the point where you're concatenating in a loop - that's usually when the compiler can't substitute StringBuilder by itself.
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What algorithm does Readability use for extracting text from URLs?
... been trying to find a way of intelligently extracting the "relevant" text from a URL by eliminating the text related to ads and all the other clutter.After several months of researching, I gave it up as a problem that cannot be accurately determined. (I've tried different ways but none were reliabl...
How do I copy a folder from remote to local using scp? [closed]
How do I copy a folder from remote to local host using scp ?
11 Answers
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