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Tag: python

Show the SQL generated by Flask-SQLAlchemy

I want to get the SQL issued by Flask-SQLAlchemy queries. In Django, I can print the query attribute to get SQL. How can I get something similar in Flask? Answer Flask-SQLAlchemy records debugging information about all queries during a request. You can get the information with get_debug_queries(). Flask-Debug…

Finding prime numbers using list comprehention

I was trying to generate all prime numbers in range x to y. I tried simple example first: range(10,11) which means to check if 10 is a prime number: Here is my code: I know that the thing is missing the option to tell the expression that x%y != 0 should be checked for all y in range (2,x) and

Python if not == vs if !=

What is the difference between these two lines of code: and Is one more efficient than the other? Would it be better to use Answer Using dis to look at the bytecode generated for the two versions: not == != The latter has fewer operations, and is therefore likely to be slightly more efficient. It was pointed …

Using ffmpeg to obtain video durations in python

I’ve installed ffprobe using the pip ffprobe command on my PC, and installed ffmpeg from here. However, I’m still having trouble running the code listed here. I try to use the following code unsuccessfully. Does anyone know what’s wrong? Am I not referencing the directories correctly? Do I n…

add content to existing docx with python-docx

I’d like to open an existing word document where I already added page numbers and just add some text and headline to it. Here’s a basic example of how I tried to accomplish my goal When I do the above mentioned with a complete fresh document everything works fine – when doing this with the a…

JSON get key path in nested dictionary

Here is my json string, which keeps on changing frquently so the keys position within the dictionary is not same everytime, i need to search for a key and print it corresponding value, Since the json string changes everytime I have written an recursive function(See below) to search for key in the new json str…