import pandas as pd
fpath = './ant-learn-pandas-master/datas/beijing_tianqi/beijing_tianqi_2018.csv'
rating = pd.read_csv(fpath)
print(rating)
1、replace
rating['bWendu'] = rating.loc[:, 'bWendu'].str.replace("℃", "")
2、contains
返回每一个数值是否满足条件的bool值
a = rating.loc[:, 'bWendu'].str.contains("1")
3、判断是否为数字与链式多次处理
a = rating.loc[:, 'bWendu'].str.replace("℃","").str.isnumeric()
4、支持正则表达式
a = rating.loc[:, 'bWendu'].str.replace("[C]","")