Question

Use the dframe from pandas module:

df = dframe.resample('t', how = 'sum')

And after that I want to write the data in a new file. I use this:

with open('dframe.txt', 'w') as fout:
   fout.write(df.price1) #it is the first column

But it doesn’t work.

Answer 1

df.price1 returns a Series. Luckily Series also has a to_csv method similar to the DataFrame's:

Definition: Series.to_csv(self, path, index=True, sep=',', na_rep='',
float_format=None, header=False, index_label=None, mode='w', nanRep=None,
encoding=None)

Example usage:

df.price1.to_csv('outfile.csv')