Pandas Dataframe Print Selected Columns Where Clause

The columns are made up of pandas Series objects. Series object: an ordered, one-dimensional array of ... [df.columns[0]] # select by number ... ('c') # get col & drop from df Selecting columns with Python attributes s = df.a # same as s = df['a'] # cannot create new columns by attribute df.existing_col = df.a / df.b df['new_col'] = df.a / df.b ... ................
................