plt.subplots() is a function that returns a tuple containing a figure and axes object(s). Thus when using fig, ax = plt.subplots() you unpack this tuple into the variables fig and ax. Having fig is useful if you want to change figure-level attributes or save the figure as an image file later (e.g. with fig.savefig(‘yourfilename.png’)). You certainly don’t have to use the returned figure object … Read more
Check the PYTHONPATH and PYTHONHOME environment variables and make sure they don’t point to Python 2.x. http://bugs.python.org/issue11288
You rarely need loops for vector operations in numpy. You can create an uninitialized array and assign to all entries at once: I have timed the alternatives a[:] = numpy.nan here and a.fill(numpy.nan) as posted by Blaenk: The timings show a preference for ndarray.fill(..) as the faster alternative. OTOH, I like numpy’s convenience implementation where you can assign values to whole … Read more
I tested your code, and it works as expected on my machine. Your issue might not be your code. It could be a firewall or something else blocking all the packets on the loopback interface (127.0.0.1). Depending on your operating system, try testing with a packet monitor like Wireshark. Also, here are a few suggestions … Read more
TCP/IP is a stream-based protocol, not a message-based protocol. There’s no guarantee that every send() call by one peer results in a single recv() call by the other peer receiving the exact data sent—it might receive the data piece-meal, split across multiple recv() calls, due to packet fragmentation. You need to define your own message-based protocol on top of TCP in order to differentiate message … Read more
From Django documentation for url url(regex, view, kwargs=None, name=None) This function is an alias to django.urls.re_path(). It’s likely to be deprecated in a future release. Key difference between path and re_path is that path uses route without regex You can use re_path for complex regex calls and use just path for simpler lookups
You can first select by iloc and then sum: For sum all columns use:
Since, you are able to run Python in PowerShell. You can just do python <scriptName>.py to run the script. So, for a script named test.py containing The PowerShell session would be
In Python 2 (and Python 3) you can do: Basically % is like printf or sprintf (see docs). For Python 3.+, the same behavior can also be achieved with format: For Python 3.6+ the same behavior can be achieved with f-strings:
When passing kwargs into a function, it expects to find the exact variable name in the list. If instead your dictionary keys were stringa, integera, and floata the function would work without problem. So you either need to change your function variable names or change the key names in your dictionary to get this to work