Adding the header to a csv file

Question

I have a csv file with the dimensions 100*512 , I want to process it further in spark. The problem with the file is that it doesn\'t contain header i.e

Answer 1

Bit a old way ...

Content of demo.csv before columns:

4444,Drowsy,bit drowsy
45888,Blurred see - hazy,little seeing vision
45933,Excessive upper pain,pain problems
112397013,air,agony
76948002,pain,agony

Content of xyz.txt :

Col 1,Col 2,Col 3

Code with comments inline

#Open CSV file
with open("demo.csv", "r+") as f:
    #Open file which has header
    with open("xyz.txt",'r') as fh:
        #Read header
        header = fh.read()
        #Read complete data of CSV file
        old = f.read()
        #Get cursor to start of file
        f.seek(0)
        #Write header and old data to file.
        f.write(header+ "\n" + old)

Content of demo.csv:

Col 1,Col 2,Col 3
4444,Drowsy,bit drowsy
45888,Blurred see - hazy,little seeing vision
45933,Excessive upper pain,pain problems
112397013,air,agony
76948002,pain,agony