Pandas index

Select columns pandas

df1 = df.iloc[:,0:2] # Remember that Python does not slice inclusive of the ending index.

Source: stackoverflow.com

Select rows from dataframe pandas

from pandas import DataFrame

boxes = {'Color': ['Green','Green','Green','Blue','Blue','Red','Red','Red'],
         'Shape': ['Rectangle','Rectangle','Square','Rectangle','Square','Square','Square','Rectangle'],
         'Price': [10,15,5,5,10,15,15,5]
        }

df = DataFrame(boxes, columns= ['Color','Shape','Price'])

select_color = df.loc[df['Color'] == 'Green']
print (select_color)

Source: datatofish.com

Pandas index

How to add index to the DataFrame at runtime

df["patient"] = ["patient-" + str( i ) for i in range( max( df.index ) + 1  )]
df.set_index( "patient", inplace=True )
---------------------------------------------------------------------                 
patient = pandas.Series( ["patient-" + str( i ) for i in range( max( df.index ) + 1 )] )
df.index = patient
---------------------------------------------------------------------
df.index = ["patient-" + str( i ) for i in range( max( df.index ) + 1 )]

Pandas to sql index

resultDf.to_sql('table_name', engine, schema="schema_name", if_exists="append", index=False)

Source: stackoverflow.com

Df.index

The index (row labels) of the DataFrame.

Similar codes

0 vote161 views1 answer
Convert mpg / mp4 to gif with ffmpeg
C
0 vote158 views1 answer
Meaning of &variable c
C
0 vote150 views1 answer
Command to perform safe shutdown in unix
C
-1 vote155 views4 answers
Convert c++ to c online
C
28 votes239 views2 answers
Debian install npm
C
0 vote150 views1 answer
C read file content
C
0 vote148 views1 answer
Cmake boilerplate for visual studio c++ project
C
5 votes156 views2 answers
Latex noindent
C
2 votes181 views2 answers
Read string with space c
C
22 votes213 views2 answers
C str add int
C