Pandas Strategies for semiannual frequency data

http://stackoverflow.com/questions/13384795/using-built-in-pandas-frequencies-to-simulate-semiannual-frequency

Comment From: MarcoGorelli

Closing as there's been no activity in over a decade, and the SO answer

s.resample('6M', closed='left', label='left')

looks fine

Could revisit / reopen if there's a stronger demand and use cases