列长可以是十进制

Question

我的问题是len(df)可以是小数点

len(DataFrame)

代码：

import pandas as pd
from sklearn import preprocessing ,model_selection ,svm
from sklearn.linear_model import LinearRegression

df = quandl.get('WIKI/GOOGL',authtoken = 
't_nBiw5yVx3CXs3Zsuco')


df = df[['Open','High','Low','Close','Volume']]
HL_pct = (df['High'] - df['Low']) / df['Low'] * 100
PCT_change = (df['Close'] - df['Open']) / df['Open'] * 100

df = ['Volume','HL_pct','PCT_change','Close']

print(len(df))
forcast_col  = df['Close']

Answer 1

如果您引用的是python函数len，则该函数将返回the number of items in an object。不能为十进制，因为项不能为十进制数字（即int的一半）。