combine two dataframes pandas rows code example

Example 1: combine two dataframe in pandas

# Stack the DataFrames on top of each other
vertical_stack = pd.concat([survey_sub, survey_sub_last10], axis=0)

# Place the DataFrames side by side
horizontal_stack = pd.concat([survey_sub, survey_sub_last10], axis=1)

Example 2: how to merge rows in pandas dataframe

df = dataframe.groupby(['date', 'sitename', 'name']).sum()