Function to determine if two numbers are nearly equal when rounded to n significant decimal digits
There is a function assert_approx_equal in numpy.testing (source here) which may be a good starting point.
Python
How to read html from a url in python 3
I looked at previous similar questions and got only more confused. In python 3.4, I want to read an html page as a string, given the url. In perl I do this with LWP::Simple, using get(). A matplotlib 1.3.1 example says: import urllib; u1=urllib.urlretrieve(url). python3 can’t find urlretrieve. I tried u1 = urllib.request.urlopen(url), which appears … Read more
Installing Pylab/Matplotlib
I’m trying to write a program that plots a graph, which made me look into Matplotlib. I found a tutorial that started out with this little program, that worked fine: Then I tried to run it on another computer, where it did not work at all. I tried to download Pylab and Matplotlib. When I … Read more
Convert list of dictionaries to a pandas DataFrame
Supposing d is your list of dicts, simply: Note: this does not work with nested data.
How to downgrade tensorflow, multiple versions possible?
I have tensorflow 1.2.1 installed, and I need to downgrade it to version 1.1 to run a specific tutorial. What is the safe way to do it? I am using windows 10, python 3.5. Tensorflow was installed with pip3, but “pip3 show tensorflow” returns blank. Is it possible to have multiple version of tensorflow on … Read more
What is the most efficient way to store a list in the Django models?
Would this relationship not be better expressed as a one-to-many foreign key relationship to a Friends table? I understand that myFriends are just strings but I would think that a better design would be to create a Friend model and have MyClass contain a foreign key realtionship to the resulting table.
How to fix SSL issue SSL_CTX_use_certificate : ca md too weak on Python Zeep
The error message you are getting indicates that the certificate you are using is signed with an md5 hash. OpenSSL 1.1.0 has introduced a new feature called security level.The default setting of 1 will cause the following (emphasis by me): The security level corresponds to a minimum of 80 bits of security. Any parameters offering … Read more
KeyError: ‘plotly_domain’
Based on this answer, try using py.plot instead of py.iplot. KeyError: ‘plotly_domain’ when using plotly to do scatter plot in python The reason is that iplot is for ipython sessions.
Python: Continuing to next iteration in outer loop
In a general case, when you have multiple levels of looping and break does not work for you (because you want to continue one of the upper loops, not the one right above the current one), you can do one of the following Refactor the loops you want to escape from into a function The … Read more
Installing lxml module in python
Just do: For Python 2 (e.g., required by Inkscape): If you are planning to install from source, then albertov’s answer will help. But unless there is a reason, don’t, just install it from the repository.