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argparse module How to add option without any argum>me m>nt?
... suggested use action='store_true':
>>> from argparse import Argum>me m>ntParser
>>> p = Argum>me m>ntParser()
>>> _ = p.add_argum>me m>nt('-f', '--foo', action='store_true')
>>> args = p.parse_args()
>>> args.foo
False
>>> args = p.parse_args(['-f'])
>>...
C++ Dynamic Shared Library on Linux
... otherwise linker will try to perform static linkage */
virtual void DoSom>me m>thing();
private:
int x;
};
#endif
myclass.cc
#include "myclass.h"
#include <iostream>
using nam>me m>space std;
extern "C" MyClass* create_object()
{
return new MyClass;
}
extern "C" void destroy_object( MyCla...
Javadoc @see or {@link}?
Could som>me m>one tell m>me m> the difference between javadoc @see and {@link} ?
3 Answers
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Adding an arbitrary line to a matplotlib plot in ipython notebook
.../matplotlib and using it through the ipython notebook. I'm trying to add som>me m> annotation lines to an existing graph and I can't figure out how to render the lines on a graph. So, for example, if I plot the following:
...
Can existing virtualenv be upgraded gracefully?
...ten have a virtual directory for developing a module, and virtualenv the sam>me m> directory with many versions of Python, and it works just fine. :)
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Declare variable in table valued function
... are two flavors of table valued functions. One that is just a select statem>me m>nt and one that can have more rows than just a select statem>me m>nt.
This can not have a variable:
create function Func() returns table
as
return
select 10 as ColNam>me m>
You have to do like this instead:
create function Func(...
Change directory command in Docker?
...
You can run a script, or a more complex param>me m>ter to the RUN. Here is an example from a Dockerfile I've downloaded to look at previously:
RUN cd /opt && unzip treeio.zip && mv treeio-master treeio && \
rm -f treeio.zip && cd treeio ...
Logical operators for boolean indexing in Pandas
I'm working with boolean index in Pandas.
The question is why the statem>me m>nt:
3 Answers
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When to use ref and when it is not necessary in C#
I have a object that is my in m>me m>mory state of the program and also have som>me m> other worker functions that I pass the object to to modify the state. I have been passing it by ref to the worker functions. However I cam>me m> across the following function.
...
How to install pip for Python 3 on Mac OS X?
... It installs pip3 as part of the stock install.
I ended up posting this sam>me m> question on the python mailing list, and got the following answer:
# download and install setuptools
curl -O https://bootstrap.pypa.io/ez_setup.py
python3 ez_setup.py
# download and install pip
curl -O https://bootstrap.p...