Mac Excel created under python

Code
1. Create an empty table in python
import pandas as pd # poured pandas, pd arbitrary name can easily play
DF = pd.DataFrame ()
#DataFrame type data structure similar to the structure of the database tables, columns and comprising row index index.
df.to_excel ( 'C: \ Users \ yangyiming \ Desktop \ a.xls') # c without the Mac, and the disc, but also to add C at the head position, and / pasted to the entire position \. This after the copy is pasted path
2. adding a table information
import pandas as pd # poured pandas, pd arbitrary name can easily play
df = pd.DataFrame ({ 'id' : [1,2,3], 'name' : [ 'YS', 'ZY', 'kJ']})
#DataFrame type data structure similar to the structure of the database table, which contains the row and column indices. Typical data word created in the DataFrame (key refers to)
df.to_excel ( 'C: \ the Users \ yangyiming \ Desktop \ a.xls')
the new table of FIG., A column at 012 index. So how to ID him as an index which?

3. Add one: df = df.set_index ( 'id' ) # id to the index of

the complete code below
Import PANDAS AS PD
DF = pd.DataFrame ({ 'id': [l, 2,3], 'name' : [ 'YS', 'ZY', 'kJ']})
DF = df.set_index ( 'id') # id to the index
df.to_excel(‘C:\Users\yangyiming\Desktop\a.xls’)