change row names in python pd code example

Example: r change row names of a dataframe

# Basic syntax:
rownames(your_dataframe) <- new_names
# Note, the new_names has to be the same length as the dataframe

# Example usage:
# Say you want to set the rownames to be numbered 1-end:
rownames(your_dataframe) <- 1:nrow(your_dataframe)