pd.DataFrame({'email':["a@gmail.com", "b@gmail.com", "c@gmail.com", "d@gmail.com", "e@gmail.com",],
'one':[88, 99, 11, 44, 33],
'two': [80, 80, 85, 80, 70],
'three': [50, 60, 70, 80, 20]})
鉴于此DataFrame,我想为每列计算一,二和三,在特定范围内有多少个值。
范围例如是:0-70,71-80,81-90,91-100
结果将是:
out = pd.DataFrame({'colname': ["one", "two", "three"],
'b0to70': [3, 1, 4],
'b71to80': [0, 3, 1],
'b81to90': [1, 1, 0],
'b91to100': [1, 0, 0]})
这会是一个很好的惯用方法吗?
答案 0 :(得分:7)
这样就可以了:
out = pd.DataFrame()
for name in ['one','two','three']:
out[name] = pd.cut(df[name], bins=[0,70,80,90,100]).value_counts()
out.sort_index(inplace=True)
返回:
one two three
(0, 70] 3 1 4
(70, 80] 0 3 1
(80, 90] 1 1 0
(90, 100] 1 0 0