To utilize df as a name in your if statement, it is necessary to assign it a value. Suitable empty values includeNoneand a dataframe without any rows. Let's assume the latter option. import pandas df = None for i in range(100): if df is None: # Your default dataframe here. # You...
For the first solution, instead of retrieving all rows, using EXISTS to check for the existence of at least one such row is a better alternative. Regarding the second solution, while not familiar with the psycopg2 lib, one can verify the existence of a table using the following query. Choos...
However, I also want users to be able to select rows for specific actions. The issue is that clicking on the checkbox to select a row is detected as a "row" click and triggers the link. Here is the code I have written The first column contains checkb...