implement to_csv(dialect='liam2')

[gdementen]

[gdementen]

Tentatively adding this to the 0.29 milestone. We will postpone to 0.30 if necessary.

[gdementen]

Here is the small code snippet I used for this (Raphaël needed this today):

def to_liam2_csv(array, fpath):
    with open(fpath, 'w', newline='', encoding='utf8') as f:
        header = array.axes.names + [''] * (len(array.axes[-1]) - 1)
        f.write(','.join(header) + '\n')
        df = array.df
        df.index.names = ['' for n in df.index.names]
        df.to_csv(f)

PS: this is Python3 only, but I guess this will not matter 😄