Vaishali questions

Vaishali answers

• PANDAS vlookup against series with common index using map
• Filter dataframe by a list of possible prefixes for specific column
• pandas merge columns to create new column with comma separated values
• Mapping values in a pandas dataframe column to a sequence of numbers [closed]
• Obtain mode from column in groupby [duplicate]
• Binning in python pandas dataframe (not manually setting bins)
• Picking certain values in Series as headings
• Pandas - Improve Performance of apply method
• Python add a leading zero to column with str and int
• pandas dropping columns based on column name