# Install python and pip package manager
$ sudo apt install python3-dev python3-pip
# Clone this git repo
$ git clone git@github.com:cibinjoseph/csv-c81.git && cd csv-c81
# Install required packages
$ pip3 install -r requirements.txt
# Run as necessary
$ python3 csv-c81.py sample1.csv
sample1.C81 created

# Display sample1.csv file
$ cat sample1.csv
0,0,0.5,1
-180,0,0,0
-45,1,1.1,1.2
-5,2,2.1,2.2
0,0,0,0
5,-1,-1.1,-1.2
45,-3,-3.1,-3.2
180,0,0,0
# Convert sample1.csv file to sample1.C81 file
$ python3 csv-c81.py sample1.csv
sample1.C81 created
# Display sample1.C81 file
$ cat sample1.C81
sample1                       030703070307
         0.000  0.500  1.000
-180.00  0.000  0.000  0.000
 -45.00  1.000  1.100  1.200
  -5.00  2.000  2.100  2.200
   0.00  0.000  0.000  0.000
   5.00 -1.000 -1.100 -1.200
  45.00 -3.000 -3.100 -3.200
 180.00  0.000  0.000  0.000
         0.000  0.500  1.000
-180.00  0.000  0.000  0.000
 -45.00  0.000  0.000  0.000
  -5.00  0.000  0.000  0.000
   0.00  0.000  0.000  0.000
   5.00 -0.000 -0.000 -0.000
  45.00 -0.000 -0.000 -0.000
 180.00  0.000  0.000  0.000
         0.000  0.500  1.000
-180.00  0.000  0.000  0.000
 -45.00  0.000  0.000  0.000
  -5.00  0.000  0.000  0.000
   0.00  0.000  0.000  0.000
   5.00 -0.000 -0.000 -0.000
  45.00 -0.000 -0.000 -0.000
 180.00  0.000  0.000  0.000