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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 functionality will likely...
Generate random 5 characters string
I want to create exact 5 random characters string with least possibility of getting duplicated. What would be the best way to do it? Thanks.
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How to determine if a number is a prime with regex?
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You said you understand this part, but just to emphasize, the String generated has a length equal to the number supplied. So the string has three characters if and only if n == 3.
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The first part of the regex says, "any character, zero or o...
Change x axes scale in matplotlib
... is it possible to add an offset? (e.g. instead of 0.0, 0.5, 1.0, 1.5, ... and x 10^b it will be 0, 5, 10, 15,... and x 10^{b-1})
– Eagle
Jul 20 '12 at 13:20
24
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Sass - Converting Hex to RGBa for background opacity
...the hex color into RGB components, though, you can use the red(), green(), and blue() functions to do so:
$red: red($color);
$green: green($color);
$blue: blue($color);
background: rgb($red, $green, $blue); /* same as using "background: $color" */
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What is the difference between a regular string and a verbatim string?
I have a trial version of Resharper and it always suggests that I switch regular strings to verbatim strings. What is the difference?
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How does tuple comparison work in Python?
I have been reading the Core Python programming book, and the author shows an example like:
4 Answers
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What is the difference between git am and git apply?
Both git am and git apply can be used to apply patches. I fail to see the difference. I see a difference now: git am automatically commits whereas git apply only touches the files but doesn't create a commit. Is that the only difference?
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Sending multipart/formdata with jQuery.ajax
...P native array instead of a counter
Just name your file elements the same and end the name in brackets:
jQuery.each(jQuery('#file')[0].files, function(i, file) {
data.append('file[]', file);
});
$_FILES['file'] will then be an array containing the file upload fields for every file uploaded. ...
How to invoke a Linux shell command from Java
I am trying to execute some Linux commands from Java using redirection (>&) and pipes (|). How can Java invoke csh or bash commands?
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