在pandas中生成一个介于2和40之间的随机数，平均值为20

import pandas as pd

random_number = pd.Series(pd.np.random.uniform(2, 40, size=1))

mean_value = random_number.mean()

import pandas as pd

random_number = pd.Series(pd.np.random.uniform(2, 40, size=1))
mean_value = random_number.mean()

print("随机数：", random_number)
print("平均值：", mean_value)