计算熊猫系列每个唯一值的频率计数
让我们看看如何找到熊猫系列的每个唯一值的频率计数。我们将使用 value_counts() 函数来执行此任务。
例 1 :
# importing the module
import pandas as pd
# creating the series
s = pd.Series(data = [2, 3, 4, 5, 5, 6,
7, 8, 9, 5, 3])
# displaying the series
print(s)
# finding the unique count
print(s.value_counts())
输出:
输出:
例 2 :
# importing the module
import pandas as pd
# creating the series
s = pd.Series(np.take(list('0123456789'),
np.random.randint(10, size = 40)))
# displaying the series
print(s)
# finding the unique count
s.value_counts()
输出:
输出:
例 3 :
# importing pandas as pd
import pandas as pd
# creating the Series
sr = pd.Series(['Mumbai', 'Pune', 'Agra', 'Pune',
'Goa', 'Shimla', 'Goa', 'Pune'])
# displaying the series
print(sr)
# finding the unique count
sr.value_counts()
输出:
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