in distill/utils/crud.py [0:0]
def epoch_to_datetime(epoch_string):
"""
Turns Unix/Epoch DateTime string into a unix-based int
:param epoch_string: Unix/Epoch DateTime string (e.g., UserALE:clientTime)
:return: int
"""
new_datetime = (pd.to_datetime(epoch_string, unit='ms', origin='unix') - pd.Timestamp('1970-01-01')) // pd.Timedelta('1ms')
return new_datetime