pythonpandas

Removing index column in pandas when reading a csv

I have the following code which imports a CSV file. There are 3 columns and I want to set the first two of them to variables. When I set the second column to the variable "efficiency" the index column is also tacked on. How can I get rid of the index column?

df = pd.DataFrame.from_csv('Efficiency_Data.csv', header=0, parse_dates=False)
energy = df.index
efficiency = df.Efficiency
print efficiency

I tried using 

del df['index']

after I set 

energy = df.index

which I found in another post but that results in "KeyError: 'index' "

Solution

  • DataFrames and Series always have an index. Although it displays alongside the column(s), it is not a column, which is why del df['index'] did not work.

    If you want to replace the index with simple sequential numbers, use df.reset_index().

    To get a sense for why the index is there and how it is used, see e.g. 10 minutes to Pandas.