matplotlib.financeã§ãã¼ã½ã¯è¶³ ãã¼ã¿ã®ä½æ ã©ã³ãã ã¦ã©ã¼ã¯ã§æ¶ç©ºã®çºæ¿ãã£ã¼ããä½æãã¾ãã import numpy as np import pandas as pd def randomwalk(periods=None, start=None, end=None, freq='B', tz=None, normalize=False, name=None, closed=None, tick=1, **kwargs): """Returns random up/down pandas Series. Usage: ``` import datetime randomwalk(100) # Returns +-1up/down 100days from now. randomwalk(100, freq='H') # Returns +-1up/down 100
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