python code snippets

• How to find and deal with NaN values
• Different ways to subset rows and columns
• How to reorder rows and columns
• How to reformat and rename values in a column
• How to assign subject IDs
• How to convert acceptability scores to z-scores
• How to group and aggregate data
• How to generate random datasets
• How to create a new column
• How to spread data with NaN values
• How to check for counterbalancing
• How to mutate the dataframe to add item mean and sd
• How to group data and check values by group
• How to apply a function to each row without iterrows()