Consider some 2d lists: How to check if there is at least one None in a 2d list? Outputs: deal with a should output a bool value False, and b should output True. I have no ideas when the list be a 2d list. Answer You can use two loops, one inside the other. This can be simplified by using
Tag: python-3.x
Column dictionary values into separate Dataframe
I have a dataframe which has a column that contains a list of dictionaries. This is what an example column value it looks like: I want to create a separate dataframe that takes the above column values for each row, and produces a dataframe where ‘category’ is a column, and the values for that columns are score and threshold. For
ImportError: cannot import name ‘_rfc_1738_quote’ from ‘sqlalchemy.engine.url’
I am using a python snowflake connector from the following package: snowflake-sqlalchemy It used to be working but it’s now failing with this weird error. I tried to switch to older version of the package, but can’t get rid of this error. Here is the fulll stack trace: Answer Looks like this is a known issue will get resolved in
Output tensors of a Functional model must be the output of a TensorFlow `Layer`
So I’m trying to expand the Roberta Pretrained Model and I was doing a basic model for testing but I’m getting this error from TensorFlow: ValueError: Output tensors of a Functional model must be the output of a TensorFlow Layer. which is from the Model api of Keras but I don’t exactly know what’s causing it. Code: Full error traceback:
Merge using threads not working in python
I have to merge two lists and every time a full the lists in order to merge them , but what is happening that I did it like this : but what is happening that filling_buffer_thread and create_inverted_index_thread just called one time, and not working again, when I debugged the code I see that filling_buffer_thread stopped I don’t know if
Testing for None on a non Optional input parameter
Let’s say I have a python module with the following function: For that function, I have the unit test that follows: Given the type hints in the function, the input parameter should always be a defined string. But type hints are… hints. Nothing prevents the user from passing whatever it wants, and None in particular is a quite common option
lookup for a value in one column and return from another column’s corresponding row in pands
I know it is a fundamental question, but I couldn’t solve it. Any help will be appreciated My list1 has around 1059 values, list2 has around 7 values. I want to check values in list1 against values in list2, if matches append ‘x’ to list variable, if not matches append ‘y’ to same list variable. So at the end I
Best regex pattern to replace input function from a separate python file
I am new to regex so please explain how you got to the answer. Anyway I want to know the best way to match input function from a separate python file. For example: match.py Now I want to match ONLY the input statement and replace it with a random number. I will do this in a separate file main.py. So
Why no colon in forming a list from loop in one line in Python?
From this website, there is a way to form a list in Python from loop in one line My question is, typically, after a loop, there is a colon, e.g., why in the one-line approach, there is no colon? Is there any underlying reason than convention? Answer Note (in addition to what have been said in comments: it is syntax
Why Does Python Method Needs a `self` pointer for Recursion to Work?
I’m new to Python and want to use it for LeetCode. I was doing a recursion problem and realized that I have to use self. pointer in order for the recursion to work. Here is my initial code: However, this would give me an error: I had to add a self. before reverseList() in order for it to work. I’m