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How to list all installed packages and their versions in Python?
... your installer tools you can simply call this:
pip freeze
It will also include version numbers for the installed packages.
Update
pip has been updated to also produce the same output as pip freeze by calling:
pip list
Note
The output from pip list is formatted differently, so if you have s...
Does C++ support 'finally' blocks? (And what's this 'RAII' I keep hearing about?)
...erence is that RAII will deterministically release any type of resource -- including memory. When implementing IDisposable in .NET (even the .NET language C++/CLI), resources will be deterministically released except for memory. In .NET, memory is not deterministically released; memory is only rel...
List of lists into numpy array
...tomatically convert a list of list in a 2D array because the length of all included lists are the same. Do you know how not to do that: make an array of list even if all the lists have the same length? Or is it possible to convert a 2D array in a 1D array of 1D array (efficiently I mean, no iterativ...
Stop form refreshing page on submit
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Basically, include event.preventDefault(); in your form submission handling code. A one-liner variant of what I put in my other comment (basically the same as the jQuery version) would be: document.getElementById("prospects_form").addEv...
How to concatenate two strings in C++?
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How to assert output with nosetest/unittest in python?
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Truncate number to two decimal places without rounding
...ts converted into a string) or a string.
Here are some tests for n=2 (including the one requested by OP):
0 => 0.00
0.01 => 0.01
0.5839 => 0.58
0.999 => 0.99
1.01 => 1.01
2 => 2.00
2.551 => 2.55
2.99999 => 2.99
4.27...
What are the special dollar sign shell variables?
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Take care with some of the examples; $0 may include some leading path as well as the name of the program. Eg save this two line script as ./mytry.sh and the execute it.
#!/bin/bash
echo "parameter 0 --> $0" ; exit 0
Output:
parameter 0 --> ./mytry.sh
This ...
What is a serialVersionUID and why should I use it?
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JavaScript regex multiline flag doesn't work
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According to MDN, [^] also works to match any character, including newlines, in JavaScript. See developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/…
– Dan Allen
Aug 4 '14 at 9:20
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