[pandas] display options

[Michael Aye]

i am trying to display 21 columns next to each other:

<class 'pandas.core.frame.DataFrame'>
DatetimeIndex: 3960 entries, 2011-04-01 22:00:10 to 2011-04-02 09:00:00
Freq: 10S
Data columns (total 21 columns):
b3_01    2949  non-null values
b3_02    2949  non-null values
b3_03    2949  non-null values
b3_04    2949  non-null values
b3_05    2949  non-null values
b3_06    2949  non-null values
b3_07    2949  non-null values
b3_08    2949  non-null values
b3_09    2949  non-null values
b3_10    2949  non-null values
b3_11    2949  non-null values
b3_12    2949  non-null values
b3_13    2949  non-null values
b3_14    2949  non-null values
b3_15    2949  non-null values
b3_16    2949  non-null values
b3_17    2949  non-null values
b3_18    2949  non-null values
b3_19    2949  non-null values
b3_20    2949  non-null values
b3_21    2949  non-null values
dtypes: float64(21)

I am trying this:

pd.set_option('max_columns',200)

which seems to execute fine, but the display of head() still provides this:

<class 'pandas.core.frame.DataFrame'>
DatetimeIndex: 5 entries, 2011-04-01 22:00:10 to 2011-04-01 22:00:50
Freq: 10S
Data columns (total 21 columns):
b3_01    5  non-null values
b3_02    5  non-null values
b3_03    5  non-null values
b3_04    5  non-null values
b3_05    5  non-null values
b3_06    5  non-null values
b3_07    5  non-null values
b3_08    5  non-null values
b3_09    5  non-null values
b3_10    5  non-null values
b3_11    5  non-null values
b3_12    5  non-null values
b3_13    5  non-null values
b3_14    5  non-null values
b3_15    5  non-null values
b3_16    5  non-null values
b3_17    5  non-null values
b3_18    5  non-null values
b3_19    5  non-null values
b3_20    5  non-null values
b3_21    5  non-null values
dtypes: float64(21)

I am using '0.11.0'
Am I missing something?
Cheers,
Michael