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How can I upgrade specific packages using pip and a requirements file?
...exactly your problem, but in my case, I wasn't able to upgrade Django to 1.2.4 - I was always finishing with 1.2.3 version, so I uninstalled Django with:
<virtualenv>/bin/pip uninstall Django
Then I removed <virtualenv>/build/Django directory and finally I installed the proper version w...
Ubuntu running `pip install` gives error 'The following required packages can not be built: * freety
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222
No. pip will not install system-level dependencies. This means pip will not install RPM(s) (Re...
How to do a batch insert in MySQL
...nd separated by commas.
Example:
INSERT INTO tbl_name (a,b,c) VALUES(1,2,3),(4,5,6),(7,8,9);
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How to take screenshot of a div with JavaScript?
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102
No, I don't know of a way to 'screenshot' an element, but what you could do, is draw the quiz re...
No Multiline Lambda in Python: Why not?
...k at the following:
map(multilambda x:
y=x+1
return y
, [1,2,3])
Is this a lambda returning (y, [1,2,3]) (thus map only gets one parameter, resulting in an error)? Or does it return y? Or is it a syntax error, because the comma on the new line is misplaced? How would Python know wh...
Updating MySQL primary key
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235
Next time, use a single "alter table" statement to update the primary key.
alter table xx dro...
How to search by key=>value in a multidimensional array in PHP
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220
Code:
function search($array, $key, $value)
{
$results = array();
if (is_array($arra...
How to create a MySQL hierarchical recursive query
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424
For MySQL 8+: use the recursive with syntax.
For MySQL 5.x: use inline variables, path IDs, or ...
How to concatenate text from multiple rows into a single text string in SQL server?
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unbound method f() must be called with fibo_ instance as first argument (got classobj instance inste
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