ale19 questions

• elementtree: get the contents of specific tags in xml document
• pandas: map to new column, excluding some codes
• pandas: map multiple columns to one column
• pandas: sum two rows of dataframe without rearranging dataframe?
• Merge two lists of dataframes
• cannot convert nan to int (but there are no nans)
• pandas: all NaNs when subtracting two dataframes
• pandas to_csv: ascii can't encode character

ale19 answers