Compute a confidence interval from sample data
you can calculate like this way.
python
Use different Python version with virtualenv
Just use the –python (or short -p) option when creating your virtualenv instance to specify the Python executable you want to use, e.g.: N.B. For Python 3.3 or later, refer to The Aelfinn’s answer below.
H14 error in heroku – “no web processes running”
The issue here is that you’re not running any web dynos. You can tell Heroku to do this via: This will force Heroku to spin up a web dyno, thereby executing your gunicorn command.
Matplotlib plots: removing axis, legends and white spaces
I think that the command axis(‘off’) takes care of one of the problems more succinctly than changing each axis and the border separately. It still leaves the white space around the border however. Adding bbox_inches=’tight’ to the savefig command almost gets you there, you can see in the example below that the white space left is much smaller, but still present. … Read more
No Multiline Lambda in Python: Why not?
Look at the following: 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 what you want? Within the parens, indentation doesn’t matter to python, so you … Read more
Automatic indentation for Python in Notepad++
I played a bit with python in Notepad++ and I had a problem with the tab. Since in python your indentation is really important but notepad ++ put space instead of a tab. So to change to tab you need to go in notepad ++ Menu Settings > Preferences… then select Tab Settings Then select python in the Tab Settings box and uncheck Use … Read more
What are the differences between numpy arrays and matrices? Which one should I use?
Numpy matrices are strictly 2-dimensional, while numpy arrays (ndarrays) are N-dimensional. Matrix objects are a subclass of ndarray, so they inherit all the attributes and methods of ndarrays. The main advantage of numpy matrices is that they provide a convenient notation for matrix multiplication: if a and b are matrices, then a*b is their matrix product. On the other hand, as … Read more
How does str(list) work?
Well you have a total of 4 questions, let us go one by one. 1. Why does str(list) returns how we see list on the console? How does str(list) work? What is str() and __str__()? The str() callable is to return a printable form of the object only! From the docs str(object) does not always attempt to return a string that is acceptable to eval(); its goal is to return a … Read more
Extract a part of the filepath (a directory) in Python
And you can continue doing this as many times as necessary… Edit: from os.path, you can use either os.path.split or os.path.basename:
Installing opencv on Windows 10 with python 3.6 and anaconda 3.6
search anaconda promptopen and run the command. this single command help’s you to install opencv easily.you can take help from the video link below. video link