申明:本系列文章是自己在学习《利用Python进行数据分析》这本书的过程中,为了方便后期自己巩固知识而整理。
import pandas as pd
import numpy as np
file = 'D:\example.xls'
df = pd.DataFrame(pd.read_excel(file))
df
import pandas as pd
import numpy as np
file = 'D:\example.xls'
df = pd.DataFrame(pd.read_excel(file))
df = df.isnull()
df
import pandas as pd
import numpy as np
file = 'D:\example.xls'
df = pd.DataFrame(pd.read_excel(file))
df = df.notnull()
df
df.dropna()
df.dropna(thresh=4)
DataFrame.fillna(value=None, method=None, axis=None, inplace=False, limit=None, downcast=None, **kwargs)
df.fillna(0)或df.fillna(value=0)
df.fillna(method='ffill')
df.fillna(method='bfill')
df.fillna({'起息日':'2018-12-11','评级得分':'100'})
df.fillna(method='ffill',axis=1)