How to get a value from a cell of a dataframe?
I have constructed a condition that extract exactly one row from my data frame:
python
Is there a decorator to simply cache function return values?
Consider the following:
Pycharm and sys.argv arguments
I am trying to debug a script which takes command line arguments as an input. Arguments are text files in the same directory. Script gets file names from sys.argv list. My problem is I cannot launch the script with arguments in pycharm.
Get defining class of unbound method object in Python 3
Say I want to make a decorator for methods defined in a class. I want that decorator, when invoked, to be able to set an attribute on the class defining the method (in order to register it in a list of methods that serve a particular purpose).
Python string.replace regular expression
I have a parameter file of the form: parameter-name parameter-value Where the parameters may be in any order but there is only one parameter per line. I want to replace one parameter’s parameter-value with a new value. I am using a line replace function posted previously to replace the line which uses Python’s string.replace(pattern, sub). … Read more
ImportError: No module named PIL
I use this command in the shell to install PIL:
Is it possible to plot implicit equations using Matplotlib?
I would like to plot implicit equations (of the form f(x, y)=g(x, y) eg. X^y=y^x) in Matplotlib. Is this possible?
How to save a Python interactive session?
I find myself frequently using Python’s interpreter to work with databases, files, etc — basically a lot of manual formatting of semi-structured data. I don’t properly save and clean up the useful bits as often as I would like. Is there a way to save my input into the shell (db connections, variable assignments, little for loops and bits of logic) — some history of the interactive session? If I use something like script I get too much stdout noise. I don’t really need to pickle all the objects — though if there is a solution that does that, it would be OK. Ideally I would just be left with a script that ran as the one I created interactively, and I could just delete the bits I didn’t need. Is there a package that does this, or a DIY approach?
Hiding axis text in matplotlib plots
I’m trying to plot a figure without tickmarks or numbers on either of the axes (I use axes in the traditional sense, not the matplotlib nomenclature!). An issue I have come across is where matplotlib adjusts the x(y)ticklabels by subtracting a value N, then adds N at the end of the axis.
What is the easiest way to remove all packages installed by pip?
I’m trying to fix up one of my virtualenvs – I’d like to reset all of the installed libraries back to the ones that match production.