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- numpy - matplotlib import numpy as np import matplotlib.pyplot as plt ul_element = Element("P1_PRICE") ul_date = Element("P1_DATE") date_list = ul_date.value arr_date = date_list.split(",") arr_price = np.fromstring(ul_element.value, dtype=float, sep=',') fig, ax = plt.subplots(figsize=(15, 8)) ax.plot(arr_date, arr_price) fig.autofmt_xdate() plt