import pandas as pd
1、通过字典创建数据框DataFrame
import pandas as pd
df = pd.DataFrame({'key' : ['b','b','a','c','a','b','a'], 'data1' : range(7)})
2、pandas 读取csv
import pandas as pd
one=pd.read_csv(r'/Users/dapeng/Documents/user_kmeans/Python_book/3Programing/One.csv',sep=",")
3、设置工作目录
#设置工作目录
import pandas as pd
import os
os.chdir(r'/Users/dapeng/Documents/user_kmeans/Python_book/3Programing')
one=pd.read_csv('One.csv')
4、pandas 读取Excel
import pandas as pd
xls = pd.read_excel('hsb2.xlsx', sheet_name=0)
xls = pd.read_excel('hsb2.xlsx', sheet_name=‘hsb2’)
sheet_name:指定表格的第几个sheet,默认第一个,可以传递整数,也可以传递sheet的名称。
5、导出数据写入csv
xls.to_csv('copyofhsb2.csv')
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