Andrew L questions

Andrew L answers

• matplotlib US Treasury yield curve
• Check values in dataframe against another dataframe and append values if present
• Merge MultiIndex columns together into 1 level [duplicate]
• Save panda boxplot as image
• pandas: filter out column values containing empty list
• Filtering and comparing dates with Pandas
• pandas rolling max with groupby
• Data order in seaborn heatmap from pivot
• Concatenate function in Excel 2010 to add single quotes and commas
• Group by without an aggregate function