In [6]:
import pandas as pd
import numpy as np
# making list of values
values = [498.49, np.nan, 994.97, 564.59, 783.01]
# making series from list
series = pd.Series(values)
print(series)
# calling method
#cumsum = series.cumsum()
#dtype(cumsum)
# concatenating
#df = pd.DataFrame(series, cumsum)
#print(df)
0 498.49 1 NaN 2 994.97 3 564.59 4 783.01 dtype: float64