HappyPy questions

• saving variables within function - python
• join rows of different files in python
• use pd.melt to transform columns into two separate variable-value columns
• how to write user-defined column names to a csv file using pandas?
• creating subscripts inside scale_x_discrete
• mixed-models with two random effects - statsmodels
• how to replace elements in a column using pandas
• replace masked with nan in numpy masked_array
• get unique combination values of a correlation matrix - pandas
• how to update existing data frame in pandas?

HappyPy answers