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Read and overwrite a file in Python
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If you don't want to close and reopen the file, to avoid race conditions, you could truncate it:
f = open(filename, 'r+')
text = f.read()
text = re.sub('foobar', 'bar', text)
f.seek(0)
f.write(text)
f.truncate()
f.close()
The...
Rename multiple files based on pattern in Unix
There are multiple files in a directory that begin with prefix fgh , for example:
22 Answers
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How to compare two colors for similarity/difference
I want to design a program that can help me assess between 5 pre-defined colors which one is more similar to a variable color, and with what percentage. The thing is that I don't know how to do that manually step by step. So it is even more difficult to think of a program.
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What does -> mean in Python function definitions?
...tly noticed something interesting when looking at Python 3.3 grammar specification :
7 Answers
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Linq: adding conditions to the where clause conditionally
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If you do not call ToList() and your final mapping to the DTO type, you can add Where clauses as you go, and build the results at the end:
var query = from u in DataContext.Users
where u.Division == strUserDiv
&&am...
Why use double indirection? or Why use pointers to pointers?
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If you want to have a list of characters (a word), you can use char *word
If you want a list of words (a sentence), you can use char **sentence
If you want a list of sentences (a monologue), you can use char ***monologue
If...
Deleting all files in a directory with Python
I want to delete all files with the extension .bak in a directory. How can I do that in Python?
7 Answers
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Using %f with strftime() in Python to get microseconds
I'm trying to use strftime() to microsecond precision, which seems possible using %f (as stated here ). However when I try the following code:
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Haskell function composition (.) and function application ($) idioms: correct use
...been reading Real World Haskell , and I am nearing the end, but a matter of style has been niggling at me to do with the (.) and ($) operators.
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Why does changing 0.1f to 0 slow down performance by 10x?
Why does this bit of code,
5 Answers
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