Can PYSR handle some time-series operators?

[tiandiao123]

Hi, I am wondering whether PYSR can handle time-series operators?
for example:
'''

Time-based Operators

def skew(series, t):
"""
Skewness of the series over the past t periods.
"""
t = int(t)
if t <= 0:
raise ValueError("Rolling window size must be a positive integer.")

return series.rolling(t).skew()

'''