I am trying to insert rows in Python SQLAlchemy by bulk into a Postgres database by using an insert statement. I need to use the insert statement instead of bulk_insert_mappings, as I want to silently ignore failed insertion of duplicate entries. This was not apparent before, but I have added it now. The tabl…
Tag: python
Finding any changes between two lists of the same length
Given 2 lists of the same length. Is it possible to return a dict containing any changes between the 2 lists. Each key being the value that was changed and the key’s value being the value it was changed to. The following returns difference between the 2 lists: I am looking to go one step further and sav…
How to italicize a string with underscore in the title of a plot
I would like to title a chart in seaborn as – countplot of adult_male by alive I found an old Jupyter Notebook document where someone used $ to wrap around the word to italicize. However, this does not work if there is an underscore. See the code below – How do I fix the title? Answer This works i…
Python script to extract data from csv file
sharing the sample file screenshots, script I developed and other details below. In the countries_source.csv file, I have a list of countries and I need a subset of its data created in mycountries.csv file until I hit the value “Asia” in the first column. Using the below script, I was able to get …
VLC trigger action when media reaches timestamp
I’d like to the ability to run some code when the timestamp of a file has been reached (i.e. trigger an alert) How can this be achieved? I was looking at this https://www.geeksforgeeks.org/python-vl … edia-time/ However, I feel like I’m really looking for some kind of daemon (i.e. start the …
How do I create a matrix (values possibly empty) from columns and rows?
I have a table that contains actual data as well as empty cells. I want to parse it programatically but have some trouble doing so. Example: A E B C G H I also have an array of rows and columns, like: rows columns { {A; E} {B} {C; G} {H}} { {A; B; C} {E; G; H}} With this
How to install NetCDF4 module in Spyder?
I don’t know why this is causing me so much headache. I know how to use pip, and have the latest version, but still when running a script in Spyder that requires netCDF4 (import netCDF4) Spyder always returns: I opened cmd, pip install netCDF4, confirmed it installed OK. Shouldn’t this be enough? …
How to combine a string of multiple json gz files in a list into one json gz file then open the file?
I have a list of json gz https files FYI: these files are not real files due to privacy laws but mimic the exact structure. My goal is to combine all these json gz files into one large json gz file. I’ve tried numerous ways to do this by referencing other Stack Overflow questions; however, I am unable t…
Python namedtuples elementwise addition
Is there a more pythonic way to implement elementwise addition for named tuples? Using this class that inherits from a namedtuple generated class named “Point I can do elementwise addition for this specific named tuple. If we use this functionality: The result is: Is there a more pythonic way to do this…
Redirect all calls to print to a file
Consider this: Is it possible to avoid reference to f in each line? Something like: Answer THis looks like task for contextlib.redirect_stdout, example usage Warning: requires python3.4 or newer