pandas 强制类型转换 df.astype
import pandas as pd from matplotlib import pyplot as plt from datetime import datetime filename='sitka_weather_2014.csv' df=pd.read_csv(filename) print(df.dtypes)
df[' Min Humidity']=df[' Min Humidity'].astype('float64')
df=df.astype({'Max Humidity':'float64','Max Dew PointF':'float64'})
print('*'*44)
print(df.dtypes)