mozway questions

mozway answers

• why and when should use a stack() and unstack() methods?
• Add a new column with count depending on occurence within a list in pandas
• How to include a text summary within a printed table?
• Updates to Python pandas dataframe rows do not update the dataframe?
• Selecting data in rows based on criteria in column
• What is the Pandas dataframe equivalent of a "left join" with duplicates?
• Pandas groupby.agg with condition
• How to add custom annotations with uncertainty to a heatmap
• Count unique value with prioritize value in pandas
• How to extract part of a string in Pandas column and make a new column