ENH: format parameter in DataFrame.to_csv

[andreas-h]

It would be good if the DataFrame.to_csv method would support specifying the string format to use.

[changhiskhan]

Can you be more specific about what you'd like DataFrame.to_csv to be able to do? A short mock example would be really helpful.

[andreas-h]

something along the lines of

df = [[0.123456, 0.234567, 0.567567], [12.32112, 123123.2, 321321.2]]
df.to_csv(filename, fmt='%.2g', sep=';')

yields

0.12;0.23;0.57
...

alternatively, the fmt parameter from to_string would be helpful, as well.

[changhiskhan]

Make sense. Thanks.

[changhiskhan]

I added a float_format keyword argument to to_csv and to_excel